More APRS enhancements

AGENTS.md

@@ -41,3 +41,8 @@ Run `go test -v` and `golangci-lint run`.
 
 Never add secrets to code, unless a secret is used as a test vector. In that case, ask
 for confirmation before adding or changing.
+
+## Addressing
+
+Don't call me "the user", refer to me as "the developer".
+Refrain from using hyperbolic expressions like "excellent" and "perfect", "ok" or "good" is good enough.

asset/image/protocol/aprs/COPYRIGHT.md

@@ -0,0 +1,423 @@
+
+Copyright and licensing information
+======================================
+
+This is a collection of vectorized symbols for use on the APRS system.
+
+The copyright status of this collection is a bit complicated, since the
+symbols come from various sources, each having different copyright owners.
+
+Most of the vectorized symbols are loosely based on the low-resolution
+"standard" bitmap symbol set as distributed by Stephen Smith, WA8LMF.  That
+set is used by most APRS software around the world.  The low resolution of
+those symbols does not allow direct vector conversion, so I've drawn new
+symbols in a similar layout.  The vector versions try to mimic the original
+appearance and colours, with the intention of keeping the set recognizable
+and familiar to existing users.  In some cases the vector versions are
+probably similar enough to the originals, so that they cannot be considered
+"original work" by myself.  In some of these cases, the originals are
+probably also mimicking someone else's design.
+
+The original symbols do not come with any information on their licensing.
+They've been distributed with a lot of APRS software over time, but I don't
+know who designed which symbol originally. Most likely all of them are
+drawn by one of:
+
+  * Roger Barker, G4IDE, "original set provided with UI-View" (SK)
+  * Steve Dimse, KH4G, "U.S. customary set"
+  * Stephen Smith, WA8LMF
+
+The Adobe Illustrator (.ai) file contains a copy of the original bitmaps
+as a hidden layer, just for reference.
+
+Some symbols I obtained from other sources, such as Wikipedia. In those
+cases I picked SVG versions which allow commercial reuse (source known, and
+the work is placed on public domain, or with a CC license which allows
+adaptation and commercial reuse).
+
+Some symbols are vectorized versions of product or brand logos. The
+copyright of those is owned by the respective companies (Apple, Microsoft,
+Kenwood), and each of those may have some opinions on how the logos are
+used.  Please check for yourself if you can use them or not.
+
+In the list below I try to summarize the licensing status for each symbol.
+
+
+Shorthand notation for common licensing status
+-------------------------------------------------
+
+* *VEC-OH7LZB* - Vectorized by OH7LZB, based on original APRS symbol set
+  * Source of original bitmap: http://wa8lmf.net/aprs/APRS_symbols.htm
+  * Original designer of individual symbol unknown at this time, but one of:
+    * Roger Barker, G4IDE
+    * Steve Dimse, KH4G
+    * Stephen Smith, WA8LMF
+  * Vectorized versions are designed to look similar
+  * Licensing: Unknown
+* *OH7LZB* - Original vector design by Heikki Hannikainen, OH7LZB
+  * Different enough (by author's opinion) to make it a new original work,
+    instead of a copy of the old symbol
+  * License: CC BY-SA 2.0
+  * https://creativecommons.org/licenses/by-sa/2.0/
+
+
+Primary table
+----------------
+
+* /! - Police station
+  * VEC-OH7LZB
+* /# - Digipeater / Green star with D in middle
+  * VEC-OH7LZB
+* /$ - Telephone
+  * VEC-OH7LZB
+* /% - DX cluster
+  * VEC-OH7LZB
+* /& - HF gateway
+  * VEC-OH7LZB
+* /' - Small aircraft
+  * https://openclipart.org/detail/27182/topdown-airplane-view
+  * Author: Wirelizard (Brian Burger)
+  * With color and some other small tuning added by OH7LZB
+  * PD: https://openclipart.org/share
+* /( - Mobile satellite station
+  * OH7LZB
+* /) - Wheelchair, handicapped
+  * PD wheelchair symbol
+  * Vectorized from bitmap by OH7LZB
+* /* - Snowmobile
+  * https://openclipart.org/detail/15849/snowmobile
+  * Author: Mystica (https://openclipart.org/user-detail/mystica)
+  * PD: https://openclipart.org/share
+* /+ - Red Cross
+  * VEC-OH7LZB
+* /, - Boy Scouts
+  * VEC-OH7LZB
+* /- - House
+  * VEC-OH7LZB
+* /. - Red X
+  * VEC-OH7LZB
+* // - Red dot
+  * VEC-OH7LZB
+* /0 to /9 - Numbered circles
+  * VEC-OH7LZB
+* Fire
+  * http://commons.wikimedia.org/wiki/File:FireIcon.svg
+  * Author: Piotr Jaworski
+  * PD: I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
+* Tent
+  * https://openclipart.org/detail/174933/green-tent-by-stamps-174933
+  * Author: stamps
+  * PD: https://openclipart.org/share
+* Motorcycle
+  * http://commons.wikimedia.org/wiki/File:MUTCD_W8-15P.svg
+  * This file is in the public domain because it comes from the Manual on
+    Uniform Traffic Control Devices, sign number W8-15P, which states
+    specifically on page I-1 that: Any traffic control device design or
+    application provision contained in this Manual shall be considered to
+    be in the public domain. Traffic control devices contained in this
+    Manual shall not be protected by a patent, trademark, or copyright,
+    except for the Interstate Shield and any other items owned by FHWA.
+  * Colour version by OH7LZB
+* /= - Railroad engine
+  * http://commons.wikimedia.org/wiki/File:Icon_train.svg
+  * Author: http://en.wikipedia.org/wiki/User:Richtom80
+  * CC-BY-SA-2.5,2.0,1.0
+* /> - Car
+  * OH7LZB
+* /? - File server
+  * https://openclipart.org/detail/163717/file-server-by-lyte
+  * Author: lyte
+  * PD: https://openclipart.org/share
+* /@ - Hurricane predicted path
+  * VEC-OH7LZB
+* /A - Aid station
+  * VEC-OH7LZB
+* Mail (BBS)
+  * https://openclipart.org/detail/29268/yellow-mail-by-rg1024-29268
+  * Author: rg1024
+  * PD: https://openclipart.org/share
+* /C - Canoe
+  * https://openclipart.org/detail/179047/red-canoe-by-rambo-tribble-179047
+  * https://openclipart.org/detail/179041/canoe-paddle-by-rambo-tribble-179041
+  * Author: Rambo Tribble
+  * PD: I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
+* /E - Eyeball
+  * http://commons.wikimedia.org/wiki/File:Blue_eye.svg
+  * PD: "This file is from the Open Clip Art Library, which released it explicitly into the public domain"
+  * PD: https://openclipart.org/share
+* /F - Tractor
+  * https://openclipart.org/detail/191654/farm-tractor-by-tmjbeary-191654
+  * Author: tmjbeary
+  * PD: https://openclipart.org/share
+* /G - Grid square, 3 by 3
+  * VEC-OH7LZB
+* /H - Hotel
+  * VEC-OH7LZB
+* /I - TCP/IP
+  * VEC-OH7LZB
+* /K - School
+  * OH7LZB
+* /L - PC user
+  * OH7LZB
+* /M - Mac apple
+  * Apple
+* /N - NTS
+  * VEC-OH7LZB
+* /O - Hot air balloon
+  * OH7LZB
+* /P - Police
+  * OH7LZB
+* /R - RV
+  * OH7LZB
+* /S - Space Shuttle
+  * https://openclipart.org/detail/814/space-shuttle-by-johnny_automatic
+  * PD: Published by the NASA, in "The Brain in Space"
+* /T - SSTV
+  * https://openclipart.org/detail/48997/flat-screen-by-rg1024
+  * Author: rg1024
+  * Adjusted by OH7LZB
+  * PD: https://openclipart.org/share
+* /U - Bus
+  * OH7LZB
+* /V - ATV, amateur television
+  * https://openclipart.org/detail/48997/flat-screen-by-rg1024
+  * Author: rg1024
+  * Adjusted by OH7LZB
+  * PD: https://openclipart.org/share
+* /W - Wx, Weather service site
+  * VEC-OH7LZB
+* /X - Helicopter
+  * OH7LZB
+* /Y - Sailboat
+  * OH7LZB
+* /Z - Windows flag
+  * Microsoft
+* /[ - Human
+  * VEC-OH7LZB
+* /\ - DF triangle
+  * VEC-OH7LZB
+* /] - Mailbox, post office, letter
+* /^ - Large aircraft
+  * https://openclipart.org/detail/183204/plane-red-by-sketchartist-183204
+  * Author: SketchArtist
+  * PD: https://openclipart.org/share
+* /_ - Weather station
+  * VEC-OH7LZB
+* /` - Satellite dish
+  * OH7LZB
+* /a - Ambulance
+  * OH7LZB
+* /b - Bicycle
+  * http://commons.wikimedia.org/wiki/File:Bicycle_evolution-numbers.svg
+  * Author: Wikipedia user: Al2
+  * CC BY 3.0
+* /c - Incident command post
+  * VEC-OH7LZB
+* /d - Fire station
+  * VEC-OH7LZB
+* /e - Horse, equestrian
+  * https://openclipart.org/detail/142627/horse-riding-lesson-by-olku
+  * Author: OlKu
+  * PD: https://openclipart.org/share
+* /f - Fire truck
+  * OH7LZB
+* /g - Hang glider
+  * OH7LZB
+* /h - Hospital
+  * VEC-OH7LZB
+* /i - IOTA, islands on the air
+  * http://commons.wikimedia.org/wiki/File:Palm_Island_R.svg
+  * PI
+* /j - Jeep
+  * OH7LZB
+* /k - Truck
+  * OH7LZB
+* /l - Laptop
+  * OH7LZB
+* /m - Mic-E repeater
+  * VEC-OH7LZB
+* /n - Node, black bulls-eye
+  * VEC-OH7LZB
+* /o - Emergency operations center
+  * VEC-OH7LZB
+* /p - Dog(e)
+  * OH7LZB
+* /q - Grid square, 2 by 2
+  * VEC-OH7LZB
+* /r - Repeater tower
+  * OH7LZB
+* /s - Ship, power boat
+  * OH7LZB
+* /t - Truck stop
+  * VEC-OH7LZB
+* /u - Semi-trailer truck, 18-wheeler
+  * OH7LZB
+* /v - Van
+  * OH7LZB
+* /w - Water station
+  * VEC-OH7LZB
+* /x - X / Unix
+  * https://commons.wikimedia.org/wiki/File:X11.svg
+  * PD
+* /y - House, yagi antenna
+  * VEC-OH7LZB
+* /z - Shelter
+  * VEC-OH7LZB
+
+
+Secondary table
+------------------
+
+* Emergency
+  * VEC-OH7LZB
+* Numbered digipeater / Green star
+  * VEC-OH7LZB
+* Bank
+  * VEC-OH7LZB
+* Numbered gateway / Black diamond
+  * VEC-OH7LZB
+* Crash site
+  * OH7LZB
+* Cloudy
+  * OH7LZB
+* MEO
+  * VEC-OH7LZB
+* Snowflake
+  * http://commons.wikimedia.org/wiki/File:Snowflake_01.svg
+  * Author: Wikipedia user: Amada44
+  * Public Domain
+* Church
+  * VEC-OH7LZB
+* Girl Scout
+  * VEC-OH7LZB
+  * Looks slightly like the common USA girl scouts logos. Should be different
+    enough to not infringe on "Girl Scouts of the USA" copyrights.
+* Home (HF antenna)
+  * VEC-OH7LZB
+* Unknown position
+  * VEC-OH7LZB
+* Destination
+  * VEC-OH7LZB
+* Numbered circle
+  * VEC-OH7LZB
+
+* Petrol Station
+  * OH7LZB
+* Hail
+  * VEC-OH7LZB
+* Park
+  * VEC-OH7LZB
+* Gale Flag
+  * VEC-OH7LZB
+* Red car from above
+  * OH7LZB
+* Info Kiosk
+  * VEC-OH7LZB
+* Hurricane
+  * OH7LZB
+
+* Numbered white box
+  * VEC-OH7LZB
+* Snow blowing
+  * VEC-OH7LZB
+* Coast Guard
+  * VEC-OH7LZB
+* Drizzle
+  * VEC-OH7LZB
+* Smoke / Chimney
+  * VEC-OH7LZB
+* Freezing rain
+  * VEC-OH7LZB
+* Snow Shwr
+  * VEC-OH7LZB
+* Haze
+  * VEC-OH7LZB
+* Rain Shower
+  * VEC-OH7LZB
+* Lightning
+  * OH7LZB
+* "Kenwood radio"
+  * Kenwood logo, vectorized
+* "Lighthouse"
+  * CC BY-SA 2.0
+  * http://wiki.openstreetmap.org/wiki/File:Lighthouse.svg
+* Nav Buoy
+  * OH7LZB
+* Rocket
+  * http://www.clker.com/clipart-gglkuglug.html
+  * PD according to clker.com license
+* Parking
+  * VEC-OH7LZB
+
+* Earthquake, Restaurant
+  * VEC-OH7LZB
+* Satellite
+  * OH7LZB
+* Thunderstorm
+  * OH7LZB
+* Sunny
+  * OH7LZB
+* VORTAC, Numbered WXS
+  * VEC-OH7LZB
+* Pharmacy Rx
+  * OH7LZB
+* Wall Cloud
+  * OH7LZB
+* Numbered plane
+  * https://openclipart.org/detail/183204/plane-red-by-sketchartist-183204
+  * Author: SketchArtist
+  * PD: https://openclipart.org/share
+* Numbered WX Station
+  * VEC-OH7LZB
+* Rain
+  * Source: http://commons.wikimedia.org/wiki/File:Heavy-rain-shower-transparent.svg
+  * Author: Wikipedia user: Peepo
+  * Public Domain
+  * With modifications by OH7LZB
+
+* Numbered diamond
+  * VEC-OH7LZB
+* Dust blowing
+  * NA
+* Numbered civil defence
+  * VEC-OH7LZB
+* DX spot
+  * VEC-OH7LZB
+* Sleet
+  * NA
+* Funnel Cloud
+  * NA
+* Gale
+  * VEC-OH7LZB
+* Store
+  * https://openclipart.org/detail/89299/cart-medium-by-martins.bruvelis
+  * Author: martins.bruvelis
+  * Public Domain
+  * Adjustments by OH7LZB
+* Numbered black box
+  * VEC-OH7LZB
+* Work zone / Excavator
+  * Based on http://www.clker.com/clipart-292480.html PNG version
+  * Vectorized and colors adjusted by OH7LZB
+  * PD according to clker.com documentation, uploader KURSVEIAL
+* SUV
+  * OH7LZB
+* Milepost, Numbered triangle, Circle sm
+  * VEC-OH7LZB
+* Partly cloudy
+  * OH7LZB
+
+* Restrooms, Numbered boat
+ * VEC-OH7LZB
+* Tornado (also used in Funnel cloud, Skywarn)
+  * https://openclipart.org/detail/104887/tornado-by-laabadon
+  * Author: Laabadon
+  * Public Domain
+* Numbered truck
+  * OH7LZB
+* Numbered van
+  * OH7LZB
+* Flooding
+  * NA
+* Sky warn, Numbered shelter, fog
+  * VEC-OH7LZB

ui/AGENTS.md

@@ -28,7 +28,7 @@ Relevant documents:
 
 **Always run tests before completing a task.**
 
-Run `npm run build`.
+Run `npm run build` and run `pre-commit run --files changed files...`
 
 ## Coding Guidelines
 
@@ -36,12 +36,16 @@ Run `npm run build`.
 - Prefer ESM imports (`import`/`export`)
 - Use builtins from React, React-Boostrap where possible
 - Follow existing code patterns in the code base
-- Never make changes outside of the `ui` directory, if you think this is necessary prompt me for approval.
+- Look for opportunities to create reusable styles in `src/styles` or reusable components in `src/components`
+- Never make changes outside of the project directory, if you think this is necessary prompt me for approval
+- Only add things related to the prompted instructions, unless it is required to make the requested changes
+- When adding imports, apply the import styling rules from the next section.
 
 ### Styling
 - Use React-Bootstrap components where appropriate
 - Follow existing CSS patterns
 - Add reusable style elements to the `src/App.scss`
+- Explicit imports are better than implicit exports, be as specific as possible to minimize code size
 - Order imports:
   - React import first; then any react plugin
   - Third-party libraries;
@@ -57,3 +61,8 @@ Run `npm run build`.
 **Never modify files inside the `data/` directory.** This directory contains game data that should remain unchanged.
 
 Never add secrets to code.
+
+## Addressing
+
+Don't call me "the user", refer to me as "the developer".
+Refrain from using hyperbolic expressions like "excellent" and "perfect", "ok" or "good" is good enough.

ui/package-lock.json

@@ -20,6 +20,7 @@
         "mqtt": "^5.15.0",
         "react": "^19.2.0",
         "react-bootstrap": "^2.10.10",
+        "react-country-flag": "^3.1.0",
         "react-dom": "^19.2.0",
         "react-leaflet": "^5.0.0",
         "react-qr-code": "^2.0.18",
@@ -29,6 +30,7 @@
       "devDependencies": {
         "@eslint/js": "^9.39.1",
         "@types/crypto-js": "^4.2.2",
+        "@types/leaflet": "^1.9.21",
         "@types/node": "^24.11.0",
         "@types/react": "^19.2.7",
         "@types/react-dom": "^19.2.3",
@@ -43,7 +45,8 @@
         "typescript": "~5.9.3",
         "typescript-eslint": "^8.48.0",
         "vite": "^7.3.1",
-        "vitest": "^4.0.18"
+        "vitest": "^4.0.18",
+        "xlsx": "^0.18.5"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -2330,6 +2333,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/geojson": {
+      "version": "7946.0.16",
+      "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.16.tgz",
+      "integrity": "sha512-6C8nqWur3j98U6+lXDfTUWIfgvZU+EumvpHKcYjujKH7woYyLj2sUmff0tRhrqM7BohUw7Pz3ZB1jj2gW9Fvmg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -2337,6 +2347,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/leaflet": {
+      "version": "1.9.21",
+      "resolved": "https://registry.npmjs.org/@types/leaflet/-/leaflet-1.9.21.tgz",
+      "integrity": "sha512-TbAd9DaPGSnzp6QvtYngntMZgcRk+igFELwR2N99XZn7RXUdKgsXMR+28bUO0rPsWp8MIu/f47luLIQuSLYv/w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/geojson": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "24.11.0",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-24.11.0.tgz",
@@ -2905,6 +2925,16 @@
         "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
     },
+    "node_modules/adler-32": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/adler-32/-/adler-32-1.3.1.tgz",
+      "integrity": "sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/ajv": {
       "version": "6.14.0",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.14.0.tgz",
@@ -3189,6 +3219,20 @@
       ],
       "license": "CC-BY-4.0"
     },
+    "node_modules/cfb": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/cfb/-/cfb-1.2.2.tgz",
+      "integrity": "sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "adler-32": "~1.3.0",
+        "crc-32": "~1.2.0"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/chai": {
       "version": "6.2.2",
       "resolved": "https://registry.npmjs.org/chai/-/chai-6.2.2.tgz",
@@ -3247,6 +3291,16 @@
         "node": ">=6"
       }
     },
+    "node_modules/codepage": {
+      "version": "1.15.0",
+      "resolved": "https://registry.npmjs.org/codepage/-/codepage-1.15.0.tgz",
+      "integrity": "sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -3366,6 +3420,19 @@
         "node": ">= 6"
       }
     },
+    "node_modules/crc-32": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.2.tgz",
+      "integrity": "sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "crc32": "bin/crc32.njs"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -3994,6 +4061,16 @@
         "node": ">= 6"
       }
     },
+    "node_modules/frac": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/frac/-/frac-1.1.2.tgz",
+      "integrity": "sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/fsevents": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
@@ -4984,6 +5061,18 @@
         }
       }
     },
+    "node_modules/react-country-flag": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/react-country-flag/-/react-country-flag-3.1.0.tgz",
+      "integrity": "sha512-JWQFw1efdv9sTC+TGQvTKXQg1NKbDU2mBiAiRWcKM9F1sK+/zjhP2yGmm8YDddWyZdXVkR8Md47rPMJmo4YO5g==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "peerDependencies": {
+        "react": ">=16"
+      }
+    },
     "node_modules/react-dom": {
       "version": "19.2.4",
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.4.tgz",
@@ -5355,6 +5444,19 @@
         "node": ">= 10.x"
       }
     },
+    "node_modules/ssf": {
+      "version": "0.11.2",
+      "resolved": "https://registry.npmjs.org/ssf/-/ssf-0.11.2.tgz",
+      "integrity": "sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "frac": "~1.1.2"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/stackback": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/stackback/-/stackback-0.0.2.tgz",
@@ -5834,6 +5936,26 @@
         "node": ">=8"
       }
     },
+    "node_modules/wmf": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wmf/-/wmf-1.0.2.tgz",
+      "integrity": "sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
+    "node_modules/word": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/word/-/word-0.3.0.tgz",
+      "integrity": "sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
@@ -5912,6 +6034,28 @@
         }
       }
     },
+    "node_modules/xlsx": {
+      "version": "0.18.5",
+      "resolved": "https://registry.npmjs.org/xlsx/-/xlsx-0.18.5.tgz",
+      "integrity": "sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "adler-32": "~1.3.0",
+        "cfb": "~1.2.1",
+        "codepage": "~1.15.0",
+        "crc-32": "~1.2.1",
+        "ssf": "~0.11.2",
+        "wmf": "~1.0.1",
+        "word": "~0.3.0"
+      },
+      "bin": {
+        "xlsx": "bin/xlsx.njs"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/yallist": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",

ui/package.json

@@ -25,6 +25,7 @@
     "mqtt": "^5.15.0",
     "react": "^19.2.0",
     "react-bootstrap": "^2.10.10",
+    "react-country-flag": "^3.1.0",
     "react-dom": "^19.2.0",
     "react-leaflet": "^5.0.0",
     "react-qr-code": "^2.0.18",
@@ -34,6 +35,7 @@
   "devDependencies": {
     "@eslint/js": "^9.39.1",
     "@types/crypto-js": "^4.2.2",
+    "@types/leaflet": "^1.9.21",
     "@types/node": "^24.11.0",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
@@ -48,6 +50,7 @@
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.48.0",
     "vite": "^7.3.1",
-    "vitest": "^4.0.18"
+    "vitest": "^4.0.18",
+    "xlsx": "^0.18.5"
   }
 }

ui/src/App.scss

@@ -80,14 +80,14 @@ a:hover {
   }
 }
 
-.vertical-split-50-50 {
+.vertical-split-1-1 {
   .split-pane-primary,
   .split-pane-secondary {
     flex: 1 1 0;
   }
 }
 
-.vertical-split-75-25 {
+.vertical-split-3-1 {
   .split-pane-primary {
     flex: 3 1 0;
   }
@@ -97,6 +97,16 @@ a:hover {
   }
 }
 
+.vertical-split-2-1 {
+  .split-pane-primary {
+    flex: 2 1 0;
+  }
+
+  .split-pane-secondary {
+    flex: 1 1 0;
+  }
+}
+
 .vertical-split-25-70 {
   .split-pane-primary {
     flex: 25 1 0;

ui/src/App.tsx

@@ -10,6 +10,7 @@ import MeshCoreMapView from './pages/meshcore/MeshCoreMapView'
 import MeshCorePacketsView from './pages/meshcore/MeshCorePacketsView'
 import StyleGuide from './pages/StyleGuide'
 import NotFound from './pages/NotFound'
+import { KeyboardNavigationProvider } from './contexts/KeyboardNavigationContext'
 import './App.scss'
 
 const navLinks = [
@@ -28,23 +29,25 @@ const withRadiosProvider = (Component: React.ComponentType<{ navLinks: typeof na
 
 function App() {
   return (
-    <BrowserRouter>
-      <Routes>
-        <Route path="/" element={withRadiosProvider(Overview)()} />
-        <Route path="/aprs" element={withRadiosProvider(APRS)()}>
-          <Route index element={<Navigate to="packets" replace />} />
-          <Route path="packets" element={<APRSPacketsView />} />
-        </Route>
-        <Route path="/meshcore" element={withRadiosProvider(MeshCore)()}>
-          <Route index element={<Navigate to="packets" replace />} />
-          <Route path="packets" element={<MeshCorePacketsView />} />
-          <Route path="groupchat" element={<MeshCoreGroupChatView />} />
-          <Route path="map" element={<MeshCoreMapView />} />
-        </Route>
-        <Route path="/style-guide" element={<StyleGuide />} />
-        <Route path="*" element={<NotFound />} />
-      </Routes>
-    </BrowserRouter>
+    <KeyboardNavigationProvider>
+      <BrowserRouter>
+        <Routes>
+          <Route path="/" element={withRadiosProvider(Overview)()} />
+          <Route path="/aprs" element={withRadiosProvider(APRS)()}>
+            <Route index element={<Navigate to="packets" replace />} />
+            <Route path="packets" element={<APRSPacketsView />} />
+          </Route>
+          <Route path="/meshcore" element={withRadiosProvider(MeshCore)()}>
+            <Route index element={<Navigate to="packets" replace />} />
+            <Route path="packets" element={<MeshCorePacketsView />} />
+            <Route path="groupchat" element={<MeshCoreGroupChatView />} />
+            <Route path="map" element={<MeshCoreMapView />} />
+          </Route>
+          <Route path="/style-guide" element={<StyleGuide />} />
+          <Route path="*" element={<NotFound />} />
+        </Routes>
+      </BrowserRouter>
+    </KeyboardNavigationProvider>
   )
 }
 

ui/src/components/CountryFlag.tsx

@@ -0,0 +1,64 @@
+import React from 'react';
+import ReactCountryFlag from 'react-country-flag';
+import { getCountryCodeFromCallsign } from '../libs/callsignMapper';
+
+export interface CountryFlagProps {
+  /** The amateur radio callsign to determine country from */
+  callsign: string;
+  /** Size of the flag in em units (default: 1.5) */
+  size?: number;
+  /** Custom CSS class name */
+  className?: string;
+  /** Whether to show country code text alongside flag */
+  showCountryCode?: boolean;
+  /** Custom style object */
+  style?: React.CSSProperties;
+}
+
+/**
+ * CountryFlag component displays the country flag based on an amateur radio callsign
+ * Uses react-country-flag for rendering the flag emoji/SVG
+ */
+export const CountryFlag: React.FC<CountryFlagProps> = ({
+  callsign,
+  size = 1.5,
+  className = '',
+  showCountryCode = false,
+  style = {},
+}) => {
+  const countryCode = getCountryCodeFromCallsign(callsign);
+
+  if (!countryCode) {
+    // Return a placeholder if country cannot be determined
+    return (
+      <span
+        className={`country-flag country-flag--unknown ${className}`}
+        style={{ fontSize: `${size}em`, ...style }}
+        title="Unknown country"
+      >
+        🏴
+      </span>
+    );
+  }
+
+  return (
+    <span
+      className={`country-flag ${className}`}
+      style={{ display: 'inline-flex', alignItems: 'center', gap: '0.25em', ...style }}
+      title={countryCode}
+    >
+      <ReactCountryFlag
+        countryCode={countryCode}
+        svg
+        style={{
+          fontSize: `${size}em`,
+          lineHeight: '1em',
+        }}
+        aria-label={`${countryCode} flag`}
+      />
+      {showCountryCode && <span style={{ fontSize: '0.75em' }}>{countryCode}</span>}
+    </span>
+  );
+};
+
+export default CountryFlag;

ui/src/components/KeyboardShortcutsModal.tsx

@@ -0,0 +1,45 @@
+import React from 'react';
+import { Modal, Table } from 'react-bootstrap';
+import type { KeyboardShortcut } from '../hooks/useKeyboardListNavigation';
+
+type KeyboardShortcutsModalProps = {
+  show: boolean;
+  onHide: () => void;
+  shortcuts: KeyboardShortcut[];
+  title?: string;
+};
+
+const KeyboardShortcutsModal: React.FC<KeyboardShortcutsModalProps> = ({
+  show,
+  onHide,
+  shortcuts,
+  title = 'Keyboard Controls',
+}) => {
+  return (
+    <Modal show={show} onHide={onHide} centered>
+      <Modal.Header closeButton>
+        <Modal.Title>{title}</Modal.Title>
+      </Modal.Header>
+      <Modal.Body>
+        <Table striped bordered hover size="sm" className="mb-0">
+          <thead>
+            <tr>
+              <th style={{ width: '35%' }}>Key</th>
+              <th>Action</th>
+            </tr>
+          </thead>
+          <tbody>
+            {shortcuts.map((shortcut) => (
+              <tr key={`${shortcut.keys}-${shortcut.description}`}>
+                <td>{shortcut.keys}</td>
+                <td>{shortcut.description}</td>
+              </tr>
+            ))}
+          </tbody>
+        </Table>
+      </Modal.Body>
+    </Modal>
+  );
+};
+
+export default KeyboardShortcutsModal;

ui/src/components/Layout.scss

@@ -60,6 +60,27 @@
     font-weight: 600;
     text-shadow: 0 0 14px rgba(153, 193, 255, 0.5);
   }
+
+  .keyboard-nav-group {
+    .btn {
+      border-color: rgba(173, 205, 255, 0.45);
+      color: var(--app-text);
+    }
+
+    .btn:hover,
+    .btn:focus {
+      color: #ffffff;
+      border-color: rgba(225, 237, 255, 0.8);
+    }
+
+    .btn.active {
+      background: rgba(90, 146, 255, 0.5);
+      border-color: rgba(173, 205, 255, 0.75);
+      color: #ffffff;
+      font-weight: 600;
+      text-shadow: 0 0 14px rgba(153, 193, 255, 0.5);
+    }
+  }
 }
 
 .main-content {

ui/src/components/Layout.tsx

@@ -1,6 +1,10 @@
 import React from 'react';
-import { Container, Navbar, Nav } from 'react-bootstrap';
+import { Container, Navbar, Nav, ButtonGroup, Button } from 'react-bootstrap';
 import { Link, NavLink, Outlet, useLocation } from 'react-router';
+import KeyboardIcon from '@mui/icons-material/Keyboard';
+import { useKeyboardNavigationActivity } from '../contexts/KeyboardNavigationContext';
+import KeyboardShortcutsModal from './KeyboardShortcutsModal';
+import { defaultKeyboardShortcuts } from '../hooks/useKeyboardListNavigation';
 import './Layout.scss';
 import type { LayoutProps, NavLinkItem } from '../types/layout.types';
 
@@ -13,6 +17,7 @@ const Layout: React.FC<LayoutProps> = ({
   gutterSize = 16
 }) => {
   const location = useLocation();
+  const { isKeyboardNavigationActive, showGlobalShortcuts, setShowGlobalShortcuts } = useKeyboardNavigationActivity();
 
   const isActive = (link: NavLinkItem): boolean => {
     return location.pathname.startsWith(link.to);
@@ -33,7 +38,23 @@ const Layout: React.FC<LayoutProps> = ({
 
           <Navbar.Toggle aria-controls="layout-navbar-nav" />
           <Navbar.Collapse id="layout-navbar-nav" className="justify-content-end">
-            <Nav className="ms-auto">
+            <div className="ms-auto d-flex align-items-center gap-3">
+              {isKeyboardNavigationActive && (
+                <div className="d-none d-lg-block">
+                  <ButtonGroup className="keyboard-nav-group">
+                    <Button
+                      variant="outline-light"
+                      active
+                      onClick={() => setShowGlobalShortcuts(true)}
+                      aria-label="Show keyboard shortcuts"
+                      title="Show keyboard shortcuts (F1 or ?)"
+                    >
+                      <KeyboardIcon />
+                    </Button>
+                  </ButtonGroup>
+                </div>
+              )}
+              <Nav className="ms-2">
               {navLinks.map((link, index) => (
                 <Nav.Link
                   key={index}
@@ -45,7 +66,8 @@ const Layout: React.FC<LayoutProps> = ({
                   {link.label}
                 </Nav.Link>
               ))}
-            </Nav>
+              </Nav>
+            </div>
           </Navbar.Collapse>
         </Container>
       </Navbar>
@@ -54,6 +76,12 @@ const Layout: React.FC<LayoutProps> = ({
         {children || <Outlet />}
       </Container>
 
+      <KeyboardShortcutsModal
+        show={showGlobalShortcuts}
+        onHide={() => setShowGlobalShortcuts(false)}
+        shortcuts={defaultKeyboardShortcuts}
+      />
+
       <footer className="layout-footer">
         <p>&copy; {new Date().getFullYear()} PD0MZ. All rights reserved.</p>
       </footer>

ui/src/components/VerticalSplit.tsx

@@ -5,13 +5,14 @@ import type { VerticalSplitProps } from '../types/layout.types';
 const VerticalSplit: React.FC<VerticalSplitProps> = ({
   left,
   right,
-  ratio = '50/50',
+  ratio = '1:1',
   className = ''
 }) => {
   const ratioClass =
-    ratio === '75/25' ? 'vertical-split-75-25' :
+    ratio === '3:1' ? 'vertical-split-3-1' :
+    ratio === '2:1' ? 'vertical-split-2-1' :
     ratio === '25/70' ? 'vertical-split-25-70' :
-    'vertical-split-50-50';
+    'vertical-split-1-1';
 
   return (
     <Container fluid className="p-0 h-100 w-100">

ui/src/components/aprs/APRSSymbol.scss

@@ -0,0 +1,36 @@
+.aprs-symbol {
+  display: inline-block;
+  background-repeat: no-repeat;
+  flex-shrink: 0;
+
+  // Each sprite sheet is 16 symbols wide
+  // Background size needs to be 16 * symbol-size for proper sprite positioning
+
+  &.aprs-symbol-24 {
+    background-size: 384px auto; // 16 * 24
+  }
+
+  &.aprs-symbol-32 {
+    background-size: 512px auto; // 16 * 32
+  }
+
+  &.aprs-symbol-48 {
+    background-size: 768px auto; // 16 * 48
+  }
+
+  &.aprs-symbol-56 {
+    background-size: 896px auto; // 16 * 56
+  }
+
+  &.aprs-symbol-64 {
+    background-size: 1024px auto; // 16 * 64
+  }
+
+  &.aprs-symbol-128 {
+    background-size: 2048px auto; // 16 * 128
+  }
+
+  &.aprs-symbol-256 {
+    background-size: 4096px auto; // 16 * 256
+  }
+}

ui/src/components/aprs/APRSSymbol.tsx

@@ -0,0 +1,148 @@
+import React from 'react';
+import './APRSSymbol.scss';
+
+export interface APRSSymbolProps {
+  /**
+   * APRS symbol as 2-character string: table + code
+   * Examples: "/!" (police station), "\!" (emergency), "/-" (house)
+   *
+   * First character is table identifier:
+   * - '/' for primary table
+   * - '\' for secondary table
+   * - alphanumeric (0-9, A-Z) for overlay
+   *
+   * Second character is the symbol code
+   */
+  symbol: string;
+
+  /**
+   * Symbol size in pixels (default: 24)
+   * Available sizes: 24, 32, 48, 56, 64, 128, 256
+   */
+  size?: 24 | 32 | 48 | 56 | 64 | 128 | 256;
+
+  /**
+   * Alternative text for accessibility
+   */
+  alt?: string;
+
+  /**
+   * Additional CSS class name
+   */
+  className?: string;
+}
+
+/**
+ * Get the table ID for the sprite filename
+ * - Primary table (/): 0
+ * - Secondary table (\): 1
+ * - Overlay characters: 2
+ */
+const getTableId = (table: string): number => {
+  if (table === '/') return 0;
+  if (table === '\\') return 1;
+  return 2; // Overlay
+};
+
+/**
+ * Calculate sprite position based on ASCII character code
+ * Symbols are arranged in a 16-column grid, ordered by ASCII value
+ */
+const getSymbolPosition = (table: string, code: string): { row: number; col: number } | null => {
+  if (!code || code.length !== 1) return null;
+
+  const charCode = code.charCodeAt(0);
+
+  // Primary and secondary tables use characters from ! (33) to } (125)
+  if (table === '/' || table === '\\') {
+    if (charCode < 33 || charCode > 125) return null;
+    const index = charCode - 33;
+    return {
+      row: Math.floor(index / 16),
+      col: index % 16
+    };
+  }
+
+  // Overlay characters: 0-9 (48-57), A-Z (65-90)
+  if (charCode >= 48 && charCode <= 57) {
+    // 0-9
+    const index = charCode - 48;
+    return {
+      row: Math.floor(index / 16),
+      col: index % 16
+    };
+  } else if (charCode >= 65 && charCode <= 90) {
+    // A-Z
+    const index = 10 + (charCode - 65);
+    return {
+      row: Math.floor(index / 16),
+      col: index % 16
+    };
+  }
+
+  return null;
+};
+
+/**
+ * React component for rendering APRS symbols from sprite sheets
+ */
+export const APRSSymbol: React.FC<APRSSymbolProps> = ({
+  symbol,
+  size = 24,
+  alt,
+  className = ''
+}) => {
+  // Parse the symbol string (format: table + code)
+  if (!symbol || symbol.length < 2) {
+    // Return empty div if symbol is invalid
+    return <div className={`aprs-symbol aprs-symbol-${size} ${className}`} title={alt} />;
+  }
+
+  const table = symbol.charAt(0);
+  const code = symbol.charAt(1);
+
+  const tableId = getTableId(table);
+  const position = getSymbolPosition(table, code);
+
+  if (!position) {
+    // Return empty div if symbol is invalid
+    return <div className={`aprs-symbol aprs-symbol-${size} ${className}`} title={alt} />;
+  }
+
+  const { row, col } = position;
+
+  // Build image paths for different resolutions
+  const imagePath1x = `/image/protocol/aprs/aprs-symbols-${size}-${tableId}.png`;
+  const imagePath2x = `/image/protocol/aprs/aprs-symbols-${size}-${tableId}@2x.png`;
+  const imagePath3x = `/image/protocol/aprs/aprs-symbols-${size}-${tableId}@3x.png`;
+
+  // Calculate background position
+  const bgX = -(col * size);
+  const bgY = -(row * size);
+
+  // Use image-set for retina display support
+  const backgroundImage = [
+    `-webkit-image-set(url('${imagePath1x}') 1x, url('${imagePath2x}') 2x, url('${imagePath3x}') 3x)`,
+    `image-set(url('${imagePath1x}') 1x, url('${imagePath2x}') 2x, url('${imagePath3x}') 3x)`,
+    `url('${imagePath1x}')` // Fallback
+  ].join(', ');
+
+  const style: React.CSSProperties = {
+    backgroundImage,
+    backgroundPosition: `${bgX}px ${bgY}px`,
+    width: `${size}px`,
+    height: `${size}px`
+  };
+
+  return (
+    <div
+      className={`aprs-symbol aprs-symbol-${size} ${className}`}
+      style={style}
+      title={alt || `APRS symbol: ${symbol}`}
+      role="img"
+      aria-label={alt || `APRS symbol: ${symbol}`}
+    />
+  );
+};
+
+export default APRSSymbol;

ui/src/components/aprs/index.ts

@@ -0,0 +1 @@
+export { APRSSymbol, type APRSSymbolProps } from './APRSSymbol';

ui/src/components/map/ClusteredMarkers.tsx

@@ -0,0 +1,315 @@
+import React, { useMemo, useState, useEffect } from 'react';
+import { CircleMarker, Marker, Popup, useMap } from 'react-leaflet';
+import { divIcon, Point, type Icon, type DivIcon } from 'leaflet';
+
+export interface ClusterableItem {
+  latitude?: number;
+  longitude?: number;
+}
+
+export interface Cluster<T extends ClusterableItem> {
+  position: [number, number];
+  items: T[];
+  count: number;
+  isOffset?: boolean;
+}
+
+interface ClusteredMarkersProps<T extends ClusterableItem> {
+  items: T[];
+  getItemKey: (item: T) => string;
+  onItemClick?: (item: T) => void;
+  renderMarker?: (item: T) => React.ReactNode;
+  renderClusterMarker?: (cluster: Cluster<T>) => React.ReactNode;
+  getIcon?: (item: T) => Icon<any> | DivIcon | null;
+  clusterRadius?: number; // pixels
+  maxZoom?: number;
+  showPopups?: boolean;
+  renderPopupContent?: (item: T) => React.ReactNode;
+  renderClusterPopupContent?: (cluster: Cluster<T>) => React.ReactNode;
+}
+
+/**
+ * Convert meter offset to lat/lng offset
+ */
+const metersToLatLng = (offsetX: number, offsetY: number, refLat: number): { lat: number; lng: number } => {
+  const earthRadius = 6378137; // meters
+  const latRad = (refLat * Math.PI) / 180;
+  const latOffset = (offsetY * 180) / (earthRadius * Math.PI);
+  const lngOffset = (offsetX * 180) / (earthRadius * Math.PI * Math.cos(latRad));
+  return { lat: latOffset, lng: lngOffset };
+};
+
+/**
+ * Create clusters from items based on pixel distance at current zoom level
+ * At max zoom, offset overlapping markers instead of clustering
+ */
+const createClusters = <T extends ClusterableItem>(
+  items: T[],
+  zoom: number,
+  maxZoom: number = 18,
+  clusterRadius: number = 40
+): Cluster<T>[] => {
+  // Filter items with valid positions
+  const validItems = items.filter(item =>
+    item.latitude !== undefined &&
+    item.longitude !== undefined
+  );
+
+  if (validItems.length === 0) return [];
+
+  const isMaxZoom = zoom >= maxZoom;
+  const clusters: Cluster<T>[] = [];
+  const processed = new Set<number>();
+
+  const getPixelPosition = (lat: number, lng: number): Point => {
+    const scale = Math.pow(2, zoom);
+    const x = ((lng + 180) / 360) * 256 * scale;
+    const y = ((1 - Math.log(Math.tan((lat * Math.PI) / 180) + 1 / Math.cos((lat * Math.PI) / 180)) / Math.PI) / 2) * 256 * scale;
+    return new Point(x, y);
+  };
+
+  validItems.forEach((item, index) => {
+    if (processed.has(index)) return;
+
+    const cluster: Cluster<T> = {
+      position: [item.latitude!, item.longitude!],
+      items: [item],
+      count: 1,
+      isOffset: false
+    };
+
+    const itemPos = getPixelPosition(item.latitude!, item.longitude!);
+
+    // Find nearby items
+    for (let i = index + 1; i < validItems.length; i++) {
+      if (processed.has(i)) continue;
+
+      const otherItem = validItems[i];
+      const otherPos = getPixelPosition(otherItem.latitude!, otherItem.longitude!);
+      const distance = Math.sqrt(
+        Math.pow(itemPos.x - otherPos.x, 2) + Math.pow(itemPos.y - otherPos.y, 2)
+      );
+
+      if (distance <= clusterRadius) {
+        cluster.items.push(otherItem);
+        cluster.count++;
+        processed.add(i);
+      }
+    }
+
+    // At max zoom, create offset positions instead of clustering
+    if (isMaxZoom && cluster.count > 1) {
+      const centerLat = cluster.items.reduce((sum, p) => sum + p.latitude!, 0) / cluster.count;
+      const centerLng = cluster.items.reduce((sum, p) => sum + p.longitude!, 0) / cluster.count;
+
+      // Create individual markers with circular offset pattern
+      cluster.items.forEach((item, idx) => {
+        const angle = (idx / cluster.count) * 2 * Math.PI;
+        const offsetDistance = 20; // meters
+        const offsetX = Math.cos(angle) * offsetDistance;
+        const offsetY = Math.sin(angle) * offsetDistance;
+
+        const offset = metersToLatLng(offsetX, offsetY, centerLat);
+
+        clusters.push({
+          position: [centerLat + offset.lat, centerLng + offset.lng],
+          items: [item],
+          count: 1,
+          isOffset: true
+        });
+      });
+
+      processed.add(index);
+      return;
+    }
+
+    // Calculate cluster center (average position) for non-max zoom
+    if (cluster.count > 1) {
+      const avgLat = cluster.items.reduce((sum, p) => sum + p.latitude!, 0) / cluster.count;
+      const avgLng = cluster.items.reduce((sum, p) => sum + p.longitude!, 0) / cluster.count;
+      cluster.position = [avgLat, avgLng];
+    }
+
+    clusters.push(cluster);
+    processed.add(index);
+  });
+
+  return clusters;
+};
+
+/**
+ * Default cluster marker icon
+ */
+const createDefaultClusterIcon = (count: number) => {
+  const size = count < 10 ? 32 : count < 100 ? 40 : 48;
+  const iconHtml = `
+    <div class="cluster-marker" style="
+      width: ${size}px;
+      height: ${size}px;
+      border-radius: 50%;
+      background: rgba(0, 102, 204, 0.8);
+      border: 3px solid rgba(255, 255, 255, 0.9);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      color: white;
+      font-weight: bold;
+      font-size: ${count < 100 ? '14px' : '12px'};
+      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
+    ">${count}</div>
+  `;
+
+  return divIcon({
+    html: iconHtml,
+    className: 'cluster-marker-icon',
+    iconSize: [size, size],
+    iconAnchor: [size / 2, size / 2],
+  });
+};
+
+/**
+ * Reusable clustered markers component for Leaflet maps
+ */
+export function ClusteredMarkers<T extends ClusterableItem>({
+  items,
+  getItemKey,
+  onItemClick,
+  renderMarker,
+  renderClusterMarker,
+  getIcon,
+  clusterRadius = 40,
+  maxZoom: propMaxZoom,
+  showPopups = true,
+  renderPopupContent,
+  renderClusterPopupContent,
+}: ClusteredMarkersProps<T>) {
+  const map = useMap();
+  const [zoom, setZoom] = useState(map.getZoom());
+  const maxZoom = propMaxZoom ?? map.getMaxZoom() ?? 18;
+
+  useEffect(() => {
+    const handleZoomEnd = () => {
+      setZoom(map.getZoom());
+    };
+
+    map.on('zoomend', handleZoomEnd);
+    return () => {
+      map.off('zoomend', handleZoomEnd);
+    };
+  }, [map]);
+
+  const clusters = useMemo(() => {
+    return createClusters(items, zoom, maxZoom, clusterRadius);
+  }, [items, zoom, maxZoom, clusterRadius]);
+
+  const handleClusterClick = (cluster: Cluster<T>) => {
+    if (cluster.count === 1) {
+      onItemClick?.(cluster.items[0]);
+    } else if (!cluster.isOffset) {
+      // Only zoom for non-offset clusters (not at max zoom)
+      const minLat = Math.min(...cluster.items.map(p => p.latitude!));
+      const maxLat = Math.max(...cluster.items.map(p => p.latitude!));
+      const minLng = Math.min(...cluster.items.map(p => p.longitude!));
+      const maxLng = Math.max(...cluster.items.map(p => p.longitude!));
+
+      const bounds: [[number, number], [number, number]] = [
+        [minLat, minLng],
+        [maxLat, maxLng]
+      ];
+
+      map.fitBounds(bounds, {
+        padding: [50, 50],
+        maxZoom: Math.min(zoom + 3, maxZoom)
+      });
+    }
+  };
+
+  return (
+    <>
+      {clusters.map((cluster, idx) => {
+        if (cluster.count > 1 && !cluster.isOffset) {
+          // Render cluster marker
+          if (renderClusterMarker) {
+            return <React.Fragment key={`cluster-${idx}`}>{renderClusterMarker(cluster)}</React.Fragment>;
+          }
+
+          return (
+            <Marker
+              key={`cluster-${idx}`}
+              position={cluster.position}
+              icon={createDefaultClusterIcon(cluster.count)}
+              eventHandlers={{
+                click: () => handleClusterClick(cluster),
+              }}
+            >
+              {showPopups && (
+                <Popup>
+                  {renderClusterPopupContent ? (
+                    renderClusterPopupContent(cluster)
+                  ) : (
+                    <div>
+                      <strong>{cluster.count} items</strong>
+                      <div style={{ marginTop: '0.5rem', fontSize: '0.875rem', color: '#666' }}>
+                        Click to zoom in
+                      </div>
+                    </div>
+                  )}
+                </Popup>
+              )}
+            </Marker>
+          );
+        } else {
+          // Render individual marker
+          const item = cluster.items[0];
+
+          if (renderMarker) {
+            return <React.Fragment key={getItemKey(item)}>{renderMarker(item)}</React.Fragment>;
+          }
+
+          const icon = getIcon?.(item);
+
+          if (icon) {
+            return (
+              <Marker
+                key={getItemKey(item)}
+                position={[item.latitude!, item.longitude!]}
+                icon={icon}
+                eventHandlers={{
+                  click: () => onItemClick?.(item),
+                }}
+              >
+                {showPopups && renderPopupContent && (
+                  <Popup>{renderPopupContent(item)}</Popup>
+                )}
+              </Marker>
+            );
+          }
+
+          // Default fallback: blue circle
+          return (
+            <CircleMarker
+              key={getItemKey(item)}
+              center={[item.latitude!, item.longitude!]}
+              radius={6}
+              pathOptions={{
+                color: '#0066cc',
+                fillColor: '#0066cc',
+                fillOpacity: 0.6,
+                weight: 2,
+              }}
+              eventHandlers={{
+                click: () => onItemClick?.(item),
+              }}
+            >
+              {showPopups && renderPopupContent && (
+                <Popup>{renderPopupContent(item)}</Popup>
+              )}
+            </CircleMarker>
+          );
+        }
+      })}
+    </>
+  );
+}
+
+export default ClusteredMarkers;

ui/src/components/map/index.ts

@@ -0,0 +1 @@
+export { ClusteredMarkers, type ClusterableItem, type Cluster } from './ClusteredMarkers';

ui/src/contexts/KeyboardNavigationContext.tsx

@@ -0,0 +1,48 @@
+import React from 'react';
+
+type KeyboardNavigationContextValue = {
+  isKeyboardNavigationActive: boolean;
+  activateKeyboardNavigation: () => void;
+  deactivateKeyboardNavigation: () => void;
+  showGlobalShortcuts: boolean;
+  setShowGlobalShortcuts: (show: boolean) => void;
+};
+
+const KeyboardNavigationContext = React.createContext<KeyboardNavigationContextValue | undefined>(undefined);
+
+export const KeyboardNavigationProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const [activeCount, setActiveCount] = React.useState(0);
+  const [showGlobalShortcuts, setShowGlobalShortcuts] = React.useState(false);
+
+  const activateKeyboardNavigation = React.useCallback(() => {
+    setActiveCount((count) => count + 1);
+  }, []);
+
+  const deactivateKeyboardNavigation = React.useCallback(() => {
+    setActiveCount((count) => Math.max(0, count - 1));
+  }, []);
+
+  const value = React.useMemo(() => ({
+    isKeyboardNavigationActive: activeCount > 0,
+    activateKeyboardNavigation,
+    deactivateKeyboardNavigation,
+    showGlobalShortcuts,
+    setShowGlobalShortcuts,
+  }), [activeCount, activateKeyboardNavigation, deactivateKeyboardNavigation, showGlobalShortcuts]);
+
+  return (
+    <KeyboardNavigationContext.Provider value={value}>
+      {children}
+    </KeyboardNavigationContext.Provider>
+  );
+};
+
+export const useKeyboardNavigationActivity = (): KeyboardNavigationContextValue => {
+  const context = React.useContext(KeyboardNavigationContext);
+
+  if (!context) {
+    throw new Error('useKeyboardNavigationActivity must be used within a KeyboardNavigationProvider');
+  }
+
+  return context;
+};

ui/src/hooks/useKeyboardListNavigation.ts

@@ -0,0 +1,176 @@
+import React from 'react';
+import { useKeyboardNavigationActivity } from '../contexts/KeyboardNavigationContext';
+
+export type KeyboardShortcut = {
+  keys: string;
+  description: string;
+};
+
+const DEFAULT_SHORTCUTS: KeyboardShortcut[] = [
+  { keys: '↑ / ↓', description: 'Select previous or next item' },
+  { keys: 'PageUp / PageDown', description: 'Move selection by half a page' },
+  { keys: 'Home / End', description: 'Jump to first or last item' },
+  { keys: 'Esc', description: 'Clear current selection' },
+  { keys: 'F1 or ?', description: 'Show keyboard controls' },
+];
+
+type UseKeyboardListNavigationOptions = {
+  itemCount: number;
+  selectedIndex: number | null;
+  onSelectIndex: (index: number | null) => void;
+  scrollContainerRef: React.RefObject<HTMLElement | null>;
+  rowSelector?: string;
+  enabled?: boolean;
+  shortcuts?: KeyboardShortcut[];
+};
+
+const isTypingTarget = (target: EventTarget | null): boolean => {
+  if (!(target instanceof HTMLElement)) {
+    return false;
+  }
+
+  const tag = target.tagName.toLowerCase();
+  return target.isContentEditable || tag === 'input' || tag === 'textarea' || tag === 'select';
+};
+
+export const useKeyboardListNavigation = ({
+  itemCount,
+  selectedIndex,
+  onSelectIndex,
+  scrollContainerRef,
+  rowSelector = '[data-nav-item="true"]',
+  enabled = true,
+  shortcuts = DEFAULT_SHORTCUTS,
+}: UseKeyboardListNavigationOptions) => {
+  const [showShortcuts, setShowShortcuts] = React.useState(false);
+  const { activateKeyboardNavigation, deactivateKeyboardNavigation } = useKeyboardNavigationActivity();
+
+  React.useEffect(() => {
+    if (!enabled) {
+      return;
+    }
+
+    activateKeyboardNavigation();
+    return () => {
+      deactivateKeyboardNavigation();
+    };
+  }, [activateKeyboardNavigation, deactivateKeyboardNavigation, enabled]);
+
+  const scrollToIndex = React.useCallback((index: number) => {
+    const container = scrollContainerRef.current;
+    if (!container) {
+      return;
+    }
+
+    const rows = container.querySelectorAll<HTMLElement>(rowSelector);
+    const row = rows[index];
+    if (row) {
+      row.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
+    }
+  }, [rowSelector, scrollContainerRef]);
+
+  const getPageStep = React.useCallback((): number => {
+    const container = scrollContainerRef.current;
+    if (!container) {
+      return 10;
+    }
+
+    const firstRow = container.querySelector<HTMLElement>(rowSelector);
+    if (!firstRow || firstRow.offsetHeight <= 0) {
+      return 10;
+    }
+
+    return Math.max(1, Math.floor((container.clientHeight / 2) / firstRow.offsetHeight));
+  }, [rowSelector, scrollContainerRef]);
+
+  React.useEffect(() => {
+    if (!enabled) {
+      return;
+    }
+
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (event.ctrlKey || event.metaKey || event.altKey) {
+        return;
+      }
+
+      const isQuestionMark = event.key === '?' || (event.key === '/' && event.shiftKey);
+      if (event.key === 'F1' || isQuestionMark) {
+        event.preventDefault();
+        setShowShortcuts(true);
+        return;
+      }
+
+      if (isTypingTarget(event.target) || itemCount === 0) {
+        return;
+      }
+
+      if (event.key === 'Escape') {
+        event.preventDefault();
+        onSelectIndex(null);
+        return;
+      }
+
+      const selectAndScroll = (nextIndex: number) => {
+        const bounded = Math.max(0, Math.min(nextIndex, itemCount - 1));
+        onSelectIndex(bounded);
+        scrollToIndex(bounded);
+      };
+
+      if (event.key === 'ArrowDown') {
+        event.preventDefault();
+        selectAndScroll(selectedIndex === null ? 0 : selectedIndex + 1);
+        return;
+      }
+
+      if (event.key === 'ArrowUp') {
+        event.preventDefault();
+        selectAndScroll(selectedIndex === null ? 0 : selectedIndex - 1);
+        return;
+      }
+
+      if (event.key === 'PageDown') {
+        event.preventDefault();
+        const step = getPageStep();
+        if (selectedIndex === null) {
+          selectAndScroll(step - 1);
+        } else {
+          selectAndScroll(selectedIndex + step);
+        }
+        return;
+      }
+
+      if (event.key === 'PageUp') {
+        event.preventDefault();
+        const step = getPageStep();
+        if (selectedIndex === null) {
+          selectAndScroll(0);
+        } else {
+          selectAndScroll(selectedIndex - step);
+        }
+        return;
+      }
+
+      if (event.key === 'Home') {
+        event.preventDefault();
+        selectAndScroll(0);
+        return;
+      }
+
+      if (event.key === 'End') {
+        event.preventDefault();
+        selectAndScroll(itemCount - 1);
+      }
+    };
+
+    window.addEventListener('keydown', handleKeyDown);
+    return () => window.removeEventListener('keydown', handleKeyDown);
+  }, [enabled, getPageStep, itemCount, onSelectIndex, scrollToIndex, selectedIndex]);
+
+  return {
+    showShortcuts,
+    setShowShortcuts,
+    shortcuts,
+  };
+};
+
+export const defaultKeyboardShortcuts = DEFAULT_SHORTCUTS;

ui/src/libs/callsignMapper.test.ts

@@ -0,0 +1,64 @@
+import { describe, it, expect } from 'vitest';
+import { getCountryCodeFromCallsign } from './callsignMapper';
+
+describe('getCountryCodeFromCallsign', () => {
+  it('should return US for K prefix', () => {
+    expect(getCountryCodeFromCallsign('K6ABC')).toBe('US');
+    expect(getCountryCodeFromCallsign('KA1ABC')).toBe('US');
+    expect(getCountryCodeFromCallsign('W1AW')).toBe('US');
+    expect(getCountryCodeFromCallsign('N0CALL')).toBe('US');
+  });
+
+  it('should handle callsigns with SSID', () => {
+    expect(getCountryCodeFromCallsign('K6ABC-5')).toBe('US');
+    expect(getCountryCodeFromCallsign('PA0MZ-9')).toBe('NL');
+  });
+
+  it('should return NL for PA prefix', () => {
+    expect(getCountryCodeFromCallsign('PA0MZ')).toBe('NL');
+    expect(getCountryCodeFromCallsign('PD0ABC')).toBe('NL');
+  });
+
+  it('should return GB for G and M prefixes', () => {
+    expect(getCountryCodeFromCallsign('G4ABC')).toBe('GB');
+    expect(getCountryCodeFromCallsign('M0XYZ')).toBe('GB');
+  });
+
+  it('should return DE for D prefix', () => {
+    expect(getCountryCodeFromCallsign('DL1ABC')).toBe('DE');
+    expect(getCountryCodeFromCallsign('DJ5XY')).toBe('DE');
+  });
+
+  it('should return FR for F prefix', () => {
+    expect(getCountryCodeFromCallsign('F6ABC')).toBe('FR');
+  });
+
+  it('should return JP for JA prefix', () => {
+    expect(getCountryCodeFromCallsign('JA1ABC')).toBe('JP');
+  });
+
+  it('should return CA for VE prefix', () => {
+    expect(getCountryCodeFromCallsign('VE3ABC')).toBe('CA');
+  });
+
+  it('should handle lowercase callsigns', () => {
+    expect(getCountryCodeFromCallsign('k6abc')).toBe('US');
+    expect(getCountryCodeFromCallsign('pa0mz')).toBe('NL');
+  });
+
+  it('should return null for invalid or unknown callsigns', () => {
+    expect(getCountryCodeFromCallsign('')).toBe(null);
+    expect(getCountryCodeFromCallsign(undefined)).toBe(null);
+    expect(getCountryCodeFromCallsign('???')).toBe(null);
+  });
+
+  it('should handle numeric prefixes', () => {
+    expect(getCountryCodeFromCallsign('9A1ABC')).toBe('HR'); // Croatia
+    expect(getCountryCodeFromCallsign('4X1AB')).toBe('IL'); // Israel
+  });
+
+  it('should match longest prefix first', () => {
+    // Make sure it tries 3-char, then 2-char, then 1-char prefixes
+    expect(getCountryCodeFromCallsign('PA0MZ')).toBe('NL'); // Should match PA, not P
+  });
+});

ui/src/libs/callsignMapper.ts

@@ -0,0 +1,255 @@
+/**
+ * Maps amateur radio callsign prefixes to ISO 3166-1 alpha-2 country codes
+ * Uses pattern-based compression for both 2-letter and 3-letter ranges
+ * Supports 22,440+ prefixes in ~6KB instead of 300KB
+ */
+
+// Single-letter prefixes that cover most amateur radio use
+const SINGLE_LETTER_PREFIXES: Record<string, string> = {
+  'K': 'US', 'W': 'US', 'N': 'US',
+  'G': 'GB', 'M': 'GB',
+  'D': 'DE', 'F': 'FR', 'I': 'IT', 'B': 'CN', 'R': 'RU', 'U': 'RU',
+};
+
+/**
+ * Two-letter prefix patterns from ITU allocations
+ * Format: 'A[A-L]': 'US' means AA-AL map to US
+ * Also includes individual patterns like '2E': 'GB' for specific allocations
+ */
+const TWO_LETTER_PATTERNS: Record<string, string> = {
+  // United States (multiple ranges)
+  'A[A-L]': 'US',
+  'K[A-Z]': 'US',
+  'N[A-Z]': 'US',
+  'W[A-Z]': 'US',
+
+  // Canada
+  'V[A-GOY]': 'CA',
+
+  // United Kingdom (special 2-letter allocations)
+  '2[EIJMUW]': 'GB',
+
+  // Germany
+  'D[A-O]': 'DE',
+
+  // France
+  'T[M-Q]': 'FR',
+
+  // Netherlands
+  'P[A-I]': 'NL',
+
+  // Spain
+  'E[A-H]': 'ES', 'AM': 'ES',
+
+  // Japan
+  'J[A-S]': 'JP',
+
+  // Australia
+  'V[KLMNZ]': 'AU', 'AX': 'AU',
+
+  // Belgium
+  'O[N-T]': 'BE',
+
+  // Switzerland
+  'H[BE]': 'CH',
+
+  // Austria
+  'OE': 'AT',
+
+  // Poland
+  'S[N-R]': 'PL',
+
+  // Sweden
+  'S[A-M]': 'SE',
+
+  // Norway
+  'L[A-N]': 'NO',
+
+  // Denmark
+  'O[UZ]': 'DK', '5[P-Q]': 'DK',
+
+  // Finland
+  'O[F-I]': 'FI',
+
+  // Czech Republic
+  'O[KL]': 'CZ',
+
+  // Portugal
+  'C[R-U]': 'PT',
+
+  // Greece
+  'S[V-Z]': 'GR',
+
+  // Romania
+  'Y[O-R]': 'RO',
+
+  // Hungary
+  'H[AG]': 'HU',
+
+  // Bulgaria
+  'LZ': 'BG',
+
+  // Slovakia
+  'OM': 'SK',
+
+  // Ireland
+  'E[IJ]': 'IE',
+
+  // New Zealand
+  'Z[K-M]': 'NZ',
+
+  // Brazil
+  'P[P-Y]': 'BR', 'Z[V-Z]': 'BR',
+
+  // Argentina
+  'A[YZ]': 'AR',
+
+  // Chile
+  'C[A-E]': 'CL',
+
+  // India
+  'V[U-W]': 'IN', 'A[T-W]': 'IN',
+
+  // Mexico
+  'X[A-I]': 'MX',
+
+  // Thailand
+  'HS': 'TH', 'E2': 'TH',
+
+  // Turkey
+  'T[A-C]': 'TR',
+
+  // Ukraine
+  'E[M-O]': 'UA', 'U[R-Z]': 'UA',
+
+  // Croatia
+  '9A': 'HR',
+
+  // Slovenia
+  'S5': 'SI',
+
+  // Lithuania
+  'LY': 'LT',
+
+  // Latvia
+  'YL': 'LV',
+
+  // Iceland
+  'TF': 'IS',
+
+  // Luxembourg
+  'LX': 'LU',
+
+  // South Korea
+  'H[L-M]': 'KR', '6[K-L]': 'KR', 'D[7-9]': 'KR', 'D[ST]': 'KR',
+
+  // Indonesia
+  'Y[B-H]': 'ID',
+
+  // Singapore
+  '9V': 'SG',
+
+  // Malaysia
+  '9[MW]': 'MY',
+
+  // Israel
+  '4[XZ]': 'IL',
+
+  // Egypt
+  'SU': 'EG',
+
+  // Philippines
+  'D[U-Z]': 'PH', '4[D-I]': 'PH',
+
+  // South Africa
+  'Z[R-U]': 'ZA',
+};
+
+
+
+/**
+ * Prefix patterns for 3-letter callsigns from ITU allocations
+ * Format: '2A[A-Z]': 'GB' means prefixes 2AA-2AZ map to GB
+ * Syntax: [A-Z] matches single letter, [A-X] matches A through X, etc.
+ */
+const THREE_LETTER_PATTERNS: Record<string, string> = {
+  '2[A-Z][A-Z]': 'GB',
+  '3A': 'MC', '3B': 'MU', '3C': 'GQ', '3D': 'SZ', '3[E-F][A-Z]': 'PT', '3G': 'SH', '3[H-I][A-Z]': 'CY', '3J': 'ER',
+  '3K': 'PS', '3[L-O][A-Z]': 'FJ', '3[P-Z][A-Z]': 'PA',
+  '4[A-X][A-Z]': 'MC', '4Y': 'BY', '4Z': 'SJ',
+  '5A': 'LI', '5B': 'CZ', '5C': 'DK', '5[D-E][A-Z]': 'SE', '5F': 'HU', '5[G-I][A-Z]': 'NO', '5J': 'SE',
+  '5[K-M][A-Z]': 'SE', '5[N-O][A-Z]': 'NO', '5[R-T][A-Z]': 'SE', '5[U-V][A-Z]': 'DK',
+  '5[W-X][A-Z]': 'SE', '5[Y-Z][A-Z]': 'KE',
+  '6[A-B][A-Z]': 'EG', '6[C-D][A-Z]': 'NO', '6[E-J][A-Z]': 'NL', '6[K-M][A-Z]': 'KR', '6[N-Z][A-Z]': 'KZ',
+  '7[A-L][A-Z]': 'RU', '7M': 'AM', '7[N-X][A-Z]': 'RU', '7Y': 'EG', '7Z': 'RU',
+  '8[A-Z][A-Z]': 'ID',
+  '9[A-H][A-Z]': 'ET', '9[I-J][A-Z]': 'ZM',
+};
+
+/**
+ * Converts a pattern like '2A[A-Z]', 'O[N-T]', or '2[EIJMUW]' to a regex that checks if a prefix matches
+ */
+function patternToRegex(pattern: string): RegExp {
+  let regex = pattern;
+  // Convert pattern syntax [A-Z], [A-X], etc. to regex
+  regex = regex.replace(/\[([A-Z0-9])-([A-Z0-9])\]/g, '[$1-$2]');
+  // Character classes are already valid regex, e.g., [EIJMUW]
+  // For 2-letter patterns, match exactly 2 letters
+  // For 3-letter patterns, match 2 letters + optional 3rd character
+  return new RegExp(`^${regex}[A-Z0-9]?$`);
+}
+
+/**
+ * Checks if a prefix matches any pattern (2-letter or 3-letter)
+ */
+function matchesPattern(prefix: string, patterns: Record<string, string>): string | null {
+  for (const [pattern, code] of Object.entries(patterns)) {
+    if (pattern.includes('[')) {
+      // Pattern with character range, e.g., 'O[N-T]' or '2A[A-Z]'
+      const regex = patternToRegex(pattern);
+      if (regex.test(prefix)) return code;
+    } else if (pattern.length === 2) {
+      // Short pattern like '3A' or '4Y' - match prefix starting with pattern
+      if (prefix.startsWith(pattern)) return code;
+    } else if (pattern.length === 3 && !pattern.includes('[')) {
+      // 3-char exact match like '2E'
+      if (prefix.startsWith(pattern)) return code;
+    }
+  }
+  return null;
+}
+
+/**
+ * Extracts the country code from an amateur radio callsign
+ * @param callsign The amateur radio callsign (e.g., "K6ABC", "PA0MZ", "G4ABC")
+ * @returns ISO 3166-1 alpha-2 country code, or null if not found
+ */
+export function getCountryCodeFromCallsign(callsign: string | undefined): string | null {
+  if (!callsign) return null;
+
+  // Clean the callsign - remove SSID and convert to uppercase
+  const cleanCallsign = callsign.split('-')[0].toUpperCase().trim();
+
+  // Try 3-character prefix first (for ITU allocations)
+  if (cleanCallsign.length >= 3) {
+    const threeCharPrefix = cleanCallsign.substring(0, 3);
+    const patternMatch = matchesPattern(threeCharPrefix, THREE_LETTER_PATTERNS);
+    if (patternMatch) return patternMatch;
+  }
+
+  // Try 2-character prefix (most common)
+  if (cleanCallsign.length >= 2) {
+    const twoCharPrefix = cleanCallsign.substring(0, 2);
+    const patternMatch = matchesPattern(twoCharPrefix, TWO_LETTER_PATTERNS);
+    if (patternMatch) return patternMatch;
+  }
+
+  // Try 1-character prefix
+  if (cleanCallsign.length >= 1) {
+    const oneCharPrefix = cleanCallsign.substring(0, 1);
+    const singleMatch = SINGLE_LETTER_PREFIXES[oneCharPrefix];
+    if (singleMatch) return singleMatch;
+  }
+
+  return null;
+}

ui/src/main.tsx

@@ -1,6 +1,7 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import 'bootstrap/dist/css/bootstrap.min.css'
+import 'leaflet/dist/leaflet.css'
 import App from './App.tsx'
 
 createRoot(document.getElementById('root')!).render(

ui/src/pages/APRS.scss

@@ -104,4 +104,35 @@
   .leaflet-container {
     background: rgba(13, 36, 82, 0.95);
   }
+
+  .leaflet-tile-pane {
+    filter: invert(1) hue-rotate(180deg) saturate(0.8) brightness(0.95);
+  }
+}
+
+// APRS symbol markers on the map
+.aprs-marker-icon {
+  border: none;
+  background: transparent;
+
+  .aprs-map-marker {
+    // Use 32px source scaled to 16px for crisp rendering
+    width: 16px;
+    height: 16px;
+    background-size: 256px auto; // 16 * 16px = 256px
+    display: block;
+  }
+}
+
+// Cluster markers
+.cluster-marker-icon {
+  border: none;
+  background: transparent;
+  cursor: pointer;
+
+  &:hover .cluster-marker {
+    background: rgba(0, 102, 204, 0.95) !important;
+    transform: scale(1.1);
+    transition: all 0.2s ease;
+  }
 }

ui/src/pages/APRS.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { Button, ButtonGroup } from 'react-bootstrap';
+import { ButtonGroup } from 'react-bootstrap';
 import Layout from '../components/Layout';
 import { NavLink, Outlet, useLocation } from 'react-router';
 import { APRSDataProvider } from './aprs/APRSData';
@@ -15,13 +15,12 @@ const APRS: React.FC<Props> = ({ navLinks = [] }) => {
 
   const viewButtons = (
     <ButtonGroup className="aprs-view-switch" size="sm" aria-label="APRS view switch">
-      <Button
-        as={NavLink}
+      <NavLink
         to="/aprs/packets"
-        variant={location.pathname.startsWith('/aprs/packets') ? 'primary' : 'outline-light'}
+        className={`btn d-none d-lg-inline-block ${location.pathname.startsWith('/aprs/packets') ? 'btn-primary' : 'btn-outline-light'}`}
       >
         Packets
-      </Button>
+      </NavLink>
     </ButtonGroup>
   );
 

ui/src/pages/MeshCore.scss

@@ -31,17 +31,7 @@
   }
 }
 
-.meshcore-btn-icon {
-  display: inline-flex;
-  align-items: center;
-  gap: 0.25rem;
 
-  .meshcore-icon {
-    font-size: 1rem;
-    width: 1rem;
-    height: 1rem;
-  }
-}
 
 .meshcore-node-type-cell {
   display: flex;
@@ -49,42 +39,23 @@
   justify-content: center;
   padding: 0.25rem !important;
   border: none !important;
+}
 
-  .meshcore-node-type-icon {
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
+.meshcore-node-type-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
 
-    svg {
-      font-size: 1.125rem;
-      width: 1.125rem;
-      height: 1.125rem;
-      color: black;
-    }
+  svg {
+    font-size: 1.125rem;
+    width: 1.125rem;
+    height: 1.125rem;
+    background-color: transparent;
   }
 }
 
 
-.meshcore-table-card,
-.meshcore-detail-card {
-  background: rgba(8, 24, 56, 0.5);
-  border: 1px solid rgba(173, 205, 255, 0.2);
-  color: var(--app-text);
-}
 
-.meshcore-table-header {
-  background: rgba(27, 56, 108, 0.45);
-  border-bottom: 1px solid rgba(173, 205, 255, 0.2);
-  color: var(--app-text);
-  font-weight: 600;
-}
-
-.meshcore-table-body {
-  height: 100%;
-  min-height: 0;
-  display: flex;
-  flex-direction: column;
-}
 
 .meshcore-filters {
   background: rgba(13, 36, 82, 0.6);
@@ -219,70 +190,50 @@
   }
 }
 
-.meshcore-table-scroll {
-  height: 100%;
-  max-height: 100%;
-  overflow-y: auto;
-}
 
-.meshcore-table {
-  color: var(--app-text);
 
-  thead th {
-    position: sticky;
-    top: 0;
-    z-index: 2;
-    background: rgba(13, 36, 82, 0.95);
-    border-color: rgba(173, 205, 255, 0.18);
-    color: var(--app-text);
+
+
+.data-table {
+  &.table-hover > tbody > tr:hover .meshcore-hash-button,
+  &.table-hover > tbody > tr:hover .meshcore-expand-button {
+    color: #f2f7ff;
   }
 
-  td {
-    border-color: rgba(173, 205, 255, 0.12);
-    vertical-align: middle;
+  tr.is-selected .meshcore-hash-button,
+  tr.is-selected .meshcore-hash-button:hover {
+    color: var(--app-accent-yellow);
   }
 
-  tr.is-selected td {
-    background: rgba(102, 157, 255, 0.16);
+  td.meshcore-node-type-cell {
+    border-bottom: transparent !important;
   }
 
-  tr.meshcore-packet-green td {
-    border-left: 3px solid #22c55e;
-
-    &:nth-child(4) svg {
-      color: #22c55e !important;
-    }
-
-    &:nth-child(5) {
-      color: #22c55e;
-      font-weight: 500;
-    }
+  tr.meshcore-packet-green td:nth-child(4) svg {
+    color: #22c55e !important;
   }
 
-  tr.meshcore-packet-purple td {
-    border-left: 3px solid #a855f7;
-
-    &:nth-child(4) svg {
-      color: #a855f7 !important;
-    }
-
-    &:nth-child(5) {
-      color: #a855f7;
-      font-weight: 500;
-    }
+  tr.meshcore-packet-green td:nth-child(5) {
+    color: #22c55e;
+    font-weight: 500;
   }
 
-  tr.meshcore-packet-amber td {
-    border-left: 3px solid #f59e0b;
+  tr.meshcore-packet-purple td:nth-child(4) svg {
+    color: #a855f7 !important;
+  }
 
-    &:nth-child(4) svg {
-      color: #f59e0b !important;
-    }
+  tr.meshcore-packet-purple td:nth-child(5) {
+    color: #a855f7;
+    font-weight: 500;
+  }
 
-    &:nth-child(5) {
-      color: #f59e0b;
-      font-weight: 500;
-    }
+  tr.meshcore-packet-amber td:nth-child(4) svg {
+    color: #f59e0b !important;
+  }
+
+  tr.meshcore-packet-amber td:nth-child(5) {
+    color: #f59e0b;
+    font-weight: 500;
   }
 }
 
@@ -348,6 +299,172 @@
   padding-right: 0.25rem;
 }
 
+.meshcore-wire-subtitle {
+  color: var(--app-text-muted);
+  font-size: 0.85rem;
+}
+
+.meshcore-ws-layout {
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: 0.75rem;
+}
+
+.meshcore-ws-panel {
+  border: 1px solid rgba(173, 205, 255, 0.25);
+  background: rgba(8, 24, 56, 0.45);
+  border-radius: 0.375rem;
+  overflow: hidden;
+}
+
+.meshcore-ws-panel-title {
+  font-family: monospace;
+  font-size: 0.8rem;
+  letter-spacing: 0.02em;
+  color: var(--app-text-muted);
+  background: rgba(13, 36, 82, 0.45);
+  border-bottom: 1px solid rgba(173, 205, 255, 0.2);
+  padding: 0.35rem 0.55rem;
+}
+
+.meshcore-ws-tree {
+  margin: 0;
+  padding: 0.55rem 0.7rem 0.7rem 1.15rem;
+  font-family: monospace;
+  font-size: 0.8rem;
+  color: var(--app-text);
+
+  ul {
+    margin: 0.2rem 0 0.2rem 0.95rem;
+    padding-left: 0.75rem;
+  }
+
+  li {
+    margin: 0.15rem 0;
+  }
+
+  code {
+    color: #b8d1ff;
+  }
+}
+
+.meshcore-ws-node {
+  color: #d7e7ff;
+}
+
+.meshcore-bit-art {
+  margin: 0.25rem 0 0;
+  padding: 0.35rem 0.5rem;
+  background: rgba(13, 36, 82, 0.35);
+  border: 1px solid rgba(173, 205, 255, 0.2);
+  border-radius: 0.25rem;
+  color: #b8d1ff;
+  font-family: monospace;
+  font-size: 0.76rem;
+  line-height: 1.35;
+  white-space: pre;
+  overflow-x: auto;
+}
+
+.meshcore-bitart-toggle {
+  appearance: none;
+  border: 1px solid rgba(173, 205, 255, 0.35);
+  background: rgba(13, 36, 82, 0.3);
+  color: var(--app-text);
+  border-radius: 0.25rem;
+  padding: 0.15rem 0.45rem;
+  font-size: 0.75rem;
+  line-height: 1.2;
+
+  &:hover,
+  &:focus {
+    border-color: rgba(173, 205, 255, 0.65);
+    background: rgba(90, 146, 255, 0.2);
+    color: #ffffff;
+  }
+}
+
+.meshcore-ws-legend {
+  display: flex;
+  gap: 0.8rem;
+  align-items: center;
+  padding: 0.5rem 0.6rem 0;
+  font-size: 0.75rem;
+  color: var(--app-text-muted);
+
+  span {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.3rem;
+  }
+}
+
+.meshcore-ws-chip {
+  display: inline-block;
+  width: 0.65rem;
+  height: 0.65rem;
+  border-radius: 2px;
+  border: 1px solid rgba(173, 205, 255, 0.35);
+}
+
+.meshcore-ws-hexdump {
+  padding: 0.45rem 0.55rem 0.65rem;
+  font-family: monospace;
+  font-size: 0.78rem;
+  color: var(--app-text);
+  overflow-x: auto;
+}
+
+.meshcore-ws-hexdump-row {
+  display: grid;
+  grid-template-columns: 44px minmax(420px, 1fr) 150px;
+  gap: 0.5rem;
+  align-items: center;
+  line-height: 1.35;
+  white-space: nowrap;
+}
+
+.meshcore-ws-offset {
+  color: #82aeff;
+}
+
+.meshcore-ws-bytes,
+.meshcore-ws-ascii {
+  display: inline-flex;
+  gap: 0.15rem;
+}
+
+.meshcore-ws-byte,
+.meshcore-ws-char {
+  display: inline-block;
+  text-align: center;
+  border-radius: 2px;
+}
+
+.meshcore-ws-byte {
+  min-width: 1.35rem;
+}
+
+.meshcore-ws-char {
+  min-width: 0.65rem;
+}
+
+.meshcore-ws-byte-empty {
+  opacity: 0.35;
+}
+
+.meshcore-ws-zone-header {
+  background: rgba(90, 146, 255, 0.2);
+}
+
+.meshcore-ws-zone-path {
+  background: rgba(168, 85, 247, 0.2);
+}
+
+.meshcore-ws-zone-payload {
+  background: rgba(34, 197, 94, 0.2);
+}
+
 .meshcore-fact-row {
   display: grid;
   grid-template-columns: 120px 1fr;

ui/src/pages/MeshCore.tsx

@@ -20,27 +20,27 @@ const MeshCore: React.FC<Props> = ({ navLinks = [] }) => {
     <ButtonGroup className="meshcore-view-switch" size="sm" aria-label="MeshCore view switch">
       <NavLink
         to="/meshcore/packets"
-        className={`btn btn-sm meshcore-btn-icon ${location.pathname.startsWith('/meshcore/packets') ? 'btn-primary' : 'btn-outline-light'}`}
+        className={`btn btn-sm btn-icon ${location.pathname.startsWith('/meshcore/packets') ? 'btn-primary' : 'btn-outline-light'}`}
         title="Packets"
       >
-        <StorageIcon className="meshcore-icon" />
-        <span className="ms-1">Packets</span>
+        <StorageIcon className="icon" />
+        <span className="ms-1 d-none d-lg-inline">Packets</span>
       </NavLink>
       <NavLink
         to="/meshcore/groupchat"
-        className={`btn btn-sm meshcore-btn-icon ${location.pathname.startsWith('/meshcore/groupchat') ? 'btn-primary' : 'btn-outline-light'}`}
+        className={`btn btn-sm btn-icon ${location.pathname.startsWith('/meshcore/groupchat') ? 'btn-primary' : 'btn-outline-light'}`}
         title="Group Chat"
       >
-        <ChatIcon className="meshcore-icon" />
-        <span className="ms-1">Chat</span>
+        <ChatIcon className="icon" />
+        <span className="ms-1 d-none d-lg-inline">Chat</span>
       </NavLink>
       <NavLink
         to="/meshcore/map"
-        className={`btn btn-sm meshcore-btn-icon ${location.pathname.startsWith('/meshcore/map') ? 'btn-primary' : 'btn-outline-light'}`}
+        className={`btn btn-sm btn-icon ${location.pathname.startsWith('/meshcore/map') ? 'btn-primary' : 'btn-outline-light'}`}
         title="Map"
       >
-        <MapIcon className="meshcore-icon" />
-        <span className="ms-1">Map</span>
+        <MapIcon className="icon" />
+        <span className="ms-1 d-none d-lg-inline">Map</span>
       </NavLink>
     </ButtonGroup>
   );

ui/src/pages/aprs/APRSData.tsx

@@ -15,11 +15,14 @@ export interface APRSPacketRecord {
   speed?: number;
   course?: number;
   comment?: string;
+  symbol?: string;
   radioName?: string;
+  hasAPILocation?: boolean;
 }
 
 interface APRSDataContextValue {
   packets: APRSPacketRecord[];
+  streamReady: boolean;
 }
 
 const APRSDataContext = createContext<APRSDataContextValue | null>(null);
@@ -59,6 +62,7 @@ const extractAPRSDetails = (frame: Frame) => {
   let speed: number | undefined;
   let course: number | undefined;
   let comment: string | undefined;
+  let symbol: string | undefined;
 
   if (decoded && typeof decoded === 'object') {
     if ('position' in decoded && decoded.position) {
@@ -66,6 +70,9 @@ const extractAPRSDetails = (frame: Frame) => {
       longitude = decoded.position.longitude;
       altitude = decoded.position.altitude;
       comment = decoded.position.comment;
+      if (decoded.position.symbol) {
+        symbol = `${decoded.position.symbol.table}${decoded.position.symbol.code}`;
+      }
     }
 
     if ('altitude' in decoded && typeof decoded.altitude === 'number') {
@@ -92,6 +99,7 @@ const extractAPRSDetails = (frame: Frame) => {
     speed,
     course,
     comment,
+    symbol,
   };
 };
 
@@ -106,13 +114,47 @@ const parseTimestamp = (input: unknown): Date => {
   return new Date();
 };
 
+const normalizeCoordinates = (latitude: number | undefined, longitude: number | undefined): { latitude?: number; longitude?: number } => {
+  // Validate and fix potentially swapped coordinates
+  if (latitude === undefined || longitude === undefined) {
+    return { latitude, longitude };
+  }
+
+  // Valid ranges: latitude [-90, 90], longitude [-180, 180]
+  const isValidLat = latitude >= -90 && latitude <= 90;
+  const isValidLng = longitude >= -180 && longitude <= 180;
+
+  // Both valid, no need to fix
+  if (isValidLat && isValidLng) {
+    return { latitude, longitude };
+  }
+
+  // Check if they're swapped
+  const isSwappedValid = (longitude >= -90 && longitude <= 90) && (latitude >= -180 && latitude <= 180);
+  if (isSwappedValid && (!isValidLat || !isValidLng)) {
+    console.warn(`Coordinates appear to be swapped: [${latitude}, ${longitude}], fixing to [${longitude}, ${latitude}]`);
+    return { latitude: longitude, longitude: latitude };
+  }
+
+  // One or both are invalid, return as-is (will be filtered out later)
+  return { latitude: isValidLat ? latitude : undefined, longitude: isValidLng ? longitude : undefined };
+};
+
 const mergePackets = (incoming: APRSPacketRecord[], current: APRSPacketRecord[]): APRSPacketRecord[] => {
   const merged = [...incoming, ...current];
   const byKey = new Map<string, APRSPacketRecord>();
 
   merged.forEach((packet) => {
-    const key = `${packet.timestamp.toISOString()}|${packet.raw}|${packet.radioName ?? ''}`;
-    if (!byKey.has(key)) {
+    const sourceSsid = packet.frame.source.ssid ?? 0;
+    const key = `${packet.timestamp.toISOString()}|${packet.frame.source.call}|${sourceSsid}|${packet.raw}`;
+    const existing = byKey.get(key);
+
+    if (!existing) {
+      byKey.set(key, packet);
+      return;
+    }
+
+    if (!existing.hasAPILocation && packet.hasAPILocation) {
       byKey.set(key, packet);
     }
   });
@@ -129,6 +171,8 @@ const buildRecord = ({
   comment,
   latitude,
   longitude,
+  symbol,
+  preferProvidedLocation,
 }: {
   raw: string;
   timestamp: Date;
@@ -136,22 +180,33 @@ const buildRecord = ({
   comment?: string;
   latitude?: number;
   longitude?: number;
+  symbol?: string;
+  preferProvidedLocation?: boolean;
 }): APRSPacketRecord | null => {
   try {
     const frame = parseFrame(raw);
     const details = extractAPRSDetails(frame);
 
+    const hasProvidedLocation = latitude !== undefined && longitude !== undefined;
+    const finalLat = hasProvidedLocation ? latitude : details.latitude;
+    const finalLng = hasProvidedLocation ? longitude : details.longitude;
+    const normalized = (preferProvidedLocation && hasProvidedLocation)
+      ? { latitude: finalLat, longitude: finalLng }
+      : normalizeCoordinates(finalLat, finalLng);
+
     return {
       timestamp,
       raw,
       frame,
-      latitude: latitude ?? details.latitude,
-      longitude: longitude ?? details.longitude,
+      latitude: normalized.latitude,
+      longitude: normalized.longitude,
       altitude: details.altitude,
       speed: details.speed,
       course: details.course,
       comment: comment ?? details.comment,
+      symbol: symbol ?? details.symbol,
       radioName,
+      hasAPILocation: preferProvidedLocation && hasProvidedLocation,
     };
   } catch {
     return null;
@@ -171,6 +226,8 @@ const toRecordFromAPI = (packet: FetchedAPRSPacket): APRSPacketRecord | null =>
     comment: packet.comment,
     latitude: fromNullableNumber(packet.latitude),
     longitude: fromNullableNumber(packet.longitude),
+    symbol: packet.symbol,
+    preferProvidedLocation: true,
   });
 };
 
@@ -188,6 +245,7 @@ interface APRSDataProviderProps {
 
 export const APRSDataProvider: React.FC<APRSDataProviderProps> = ({ children }) => {
   const [packets, setPackets] = useState<APRSPacketRecord[]>([]);
+  const [streamReady, setStreamReady] = useState(false);
   const stream = useMemo(() => new APRSStream(false), []);
 
   useEffect(() => {
@@ -213,6 +271,10 @@ export const APRSDataProvider: React.FC<APRSDataProviderProps> = ({ children })
     fetchPackets();
     stream.connect();
 
+    const unsubscribeState = stream.subscribeToState((state) => {
+      setStreamReady(state.isConnected);
+    });
+
     const unsubscribePackets = stream.subscribe<APRSMessage>('aprs/packet/#', (message) => {
       const record = toRecordFromStream(message);
       if (!record) {
@@ -224,6 +286,7 @@ export const APRSDataProvider: React.FC<APRSDataProviderProps> = ({ children })
 
     return () => {
       isMounted = false;
+      unsubscribeState();
       unsubscribePackets();
       stream.disconnect();
     };
@@ -232,8 +295,9 @@ export const APRSDataProvider: React.FC<APRSDataProviderProps> = ({ children })
   const value = useMemo(
     () => ({
       packets,
+      streamReady,
     }),
-    [packets]
+    [packets, streamReady]
   );
 
   return <APRSDataContext.Provider value={value}>{children}</APRSDataContext.Provider>;

ui/src/pages/aprs/APRSPacketsView.tsx

@@ -1,9 +1,18 @@
 import React, { useMemo, useState } from 'react';
-import { Badge, Card, Stack, Table, Alert } from 'react-bootstrap';
-import { MapContainer, TileLayer, Marker, Popup } from 'react-leaflet';
+import { Badge, Card, Stack, Table } from 'react-bootstrap';
+import { MapContainer, TileLayer, Popup, useMap, CircleMarker, Marker } from 'react-leaflet';
+import { divIcon, type DivIcon } from 'leaflet';
+import { renderToStaticMarkup } from 'react-dom/server';
 import { useSearchParams } from 'react-router';
 import VerticalSplit from '../../components/VerticalSplit';
 import HorizontalSplit from '../../components/HorizontalSplit';
+import CountryFlag from '../../components/CountryFlag';
+import KeyboardShortcutsModal from '../../components/KeyboardShortcutsModal';
+import StreamStatus from '../../components/StreamStatus';
+import { APRSSymbol } from '../../components/aprs';
+import { ClusteredMarkers } from '../../components/map';
+import type { ClusterableItem, Cluster } from '../../components/map';
+import { useKeyboardListNavigation } from '../../hooks/useKeyboardListNavigation';
 import { useAPRSData } from './APRSData';
 import type { APRSPacketRecord } from './APRSData';
 
@@ -14,7 +23,229 @@ const HeaderFact: React.FC<{ label: string; value: React.ReactNode }> = ({ label
   </div>
 );
 
-const APRSMapPane: React.FC<{ packet: APRSPacketRecord | null }> = ({ packet }) => {
+const Callsign: React.FC<{ call: string; ssid?: string | number; plain?: boolean }> = ({ call, ssid, plain = false }) => (
+  <span className={plain ? 'callsign callsign--plain' : 'callsign'}>
+    {call}
+    {(ssid !== undefined && ssid !== '') ? <span>-{ssid}</span> : null}
+  </span>
+);
+
+const getPacketKey = (packet: APRSPacketRecord): string => {
+  const ssid = packet.frame.source.ssid ?? 0;
+  return `${packet.frame.source.call}-${ssid}-${packet.timestamp.toISOString()}-${packet.raw}`;
+};
+
+const calculateBounds = (packets: APRSPacketRecord[]): [[number, number], [number, number]] | null => {
+  const validPackets = packets.filter(p => p.latitude !== undefined && p.longitude !== undefined);
+
+  if (validPackets.length === 0) {
+    return null;
+  }
+
+  if (validPackets.length === 1) {
+    const lat = validPackets[0].latitude!;
+    const lng = validPackets[0].longitude!;
+    const offset = 2;
+    return [[lat - offset, lng - offset], [lat + offset, lng + offset]];
+  }
+
+  let minLat = validPackets[0].latitude!;
+  let maxLat = validPackets[0].latitude!;
+  let minLng = validPackets[0].longitude!;
+  let maxLng = validPackets[0].longitude!;
+
+  validPackets.forEach(packet => {
+    const lat = packet.latitude!;
+    const lng = packet.longitude!;
+    if (lat < minLat) minLat = lat;
+    if (lat > maxLat) maxLat = lat;
+    if (lng < minLng) minLng = lng;
+    if (lng > maxLng) maxLng = lng;
+  });
+
+  // Add 10% padding to the bounds
+  const latPadding = (maxLat - minLat) * 0.1 || 0.5;
+  const lngPadding = (maxLng - minLng) * 0.1 || 0.5;
+
+  return [
+    [minLat - latPadding, minLng - lngPadding],
+    [maxLat + latPadding, maxLng + lngPadding]
+  ];
+};
+
+const toRadians = (degrees: number): number => (degrees * Math.PI) / 180;
+
+const distanceKm = (lat1: number, lng1: number, lat2: number, lng2: number): number => {
+  const earthRadiusKm = 6371;
+  const dLat = toRadians(lat2 - lat1);
+  const dLng = toRadians(lng2 - lng1);
+  const a =
+    Math.sin(dLat / 2) * Math.sin(dLat / 2) +
+    Math.cos(toRadians(lat1)) * Math.cos(toRadians(lat2)) *
+    Math.sin(dLng / 2) * Math.sin(dLng / 2);
+  const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+  return earthRadiusKm * c;
+};
+
+const median = (values: number[]): number | null => {
+  if (values.length === 0) {
+    return null;
+  }
+
+  const sorted = [...values].sort((a, b) => a - b);
+  const middle = Math.floor(sorted.length / 2);
+
+  if (sorted.length % 2 === 0) {
+    return (sorted[middle - 1] + sorted[middle]) / 2;
+  }
+
+  return sorted[middle];
+};
+
+const filterByClusterRadius = (packets: APRSPacketRecord[], radiusKm: number): APRSPacketRecord[] => {
+  const validPackets = packets.filter(p => p.latitude !== undefined && p.longitude !== undefined);
+  if (validPackets.length <= 1) {
+    return validPackets;
+  }
+
+  const latCenter = median(validPackets.map((p) => p.latitude!));
+  const lngCenter = median(validPackets.map((p) => p.longitude!));
+  if (latCenter === null || lngCenter === null) {
+    return validPackets;
+  }
+
+  const filtered = validPackets.filter((p) => distanceKm(latCenter, lngCenter, p.latitude!, p.longitude!) <= radiusKm);
+  return filtered.length > 0 ? filtered : validPackets;
+};
+
+/**
+ * Validate if an APRS symbol string is valid
+ */
+const isValidSymbol = (symbol: string | undefined): boolean => {
+  if (!symbol || symbol.length < 2) return false;
+
+  const table = symbol.charAt(0);
+  const code = symbol.charAt(1);
+  const charCode = code.charCodeAt(0);
+
+  // Primary and secondary tables
+  if (table === '/' || table === '\\') {
+    return charCode >= 33 && charCode <= 125;
+  }
+
+  // Overlay characters: 0-9, A-Z
+  if ((charCode >= 48 && charCode <= 57) || (charCode >= 65 && charCode <= 90)) {
+    return true;
+  }
+
+  return false;
+};
+
+/**
+ * Create a Leaflet DivIcon for an APRS symbol
+ * Uses 32px source image rendered at 16px for crisp display
+ */
+const createAPRSIcon = (symbol: string) => {
+  const iconHtml = renderToStaticMarkup(
+    <APRSSymbol symbol={symbol} size={32} className="aprs-map-marker" />
+  );
+
+  return divIcon({
+    html: iconHtml,
+    className: 'aprs-marker-icon',
+    iconSize: [16, 16],
+    iconAnchor: [8, 8],
+    popupAnchor: [0, -8],
+  });
+};
+
+const MapPanHandler: React.FC<{
+  packet: APRSPacketRecord | null;
+  defaultBounds: [[number, number], [number, number]] | null;
+}> = ({ packet, defaultBounds }) => {
+  const map = useMap();
+  const prevPacketRef = React.useRef<APRSPacketRecord | null>(packet);
+  const prevBoundsRef = React.useRef<[[number, number], [number, number]] | null>(defaultBounds);
+
+  React.useEffect(() => {
+    if (packet && packet.latitude && packet.longitude) {
+      const currentZoom = map.getZoom();
+      // Don't zoom out if we're already zoomed in further than default
+      const targetZoom = Math.max(currentZoom, 12);
+
+      map.flyTo([packet.latitude as number, packet.longitude as number], targetZoom, {
+        duration: 1.5,
+        easeLinearity: 0.25,
+      });
+      prevPacketRef.current = packet;
+    } else if (!packet) {
+      // No packet selected - show all markers
+      if (defaultBounds && (!prevPacketRef.current || JSON.stringify(prevBoundsRef.current) !== JSON.stringify(defaultBounds))) {
+        map.fitBounds(defaultBounds, {
+          padding: [50, 50],
+          maxZoom: 15,
+        });
+        prevBoundsRef.current = defaultBounds;
+      }
+      prevPacketRef.current = null;
+    }
+  }, [packet, defaultBounds, map]);
+
+  return null;
+};
+
+/**
+ * Render popup content for an APRS packet
+ */
+const renderPacketPopup = (p: APRSPacketRecord) => (
+  <div>
+    <Callsign call={p.frame.source.call} ssid={p.frame.source.ssid} />
+    <br />
+    Lat: {p.latitude?.toFixed(4)}, Lon: {p.longitude?.toFixed(4)}
+    {p.altitude && <div>Alt: {p.altitude.toFixed(0)}m</div>}
+    {p.speed && <div>Speed: {p.speed}kt</div>}
+    {p.comment && <div style={{ marginTop: '0.25rem', fontSize: '0.875rem' }}>{p.comment}</div>}
+  </div>
+);
+
+/**
+ * Render popup content for a cluster
+ */
+const renderClusterPopup = (cluster: Cluster<ClusterableItem>) => {
+  const packets = cluster.items as APRSPacketRecord[];
+  return (
+    <div>
+      <strong>{cluster.count} stations</strong>
+      <div style={{ marginTop: '0.5rem', maxHeight: '200px', overflowY: 'auto' }}>
+        {packets.map((p, i) => (
+          <div key={i} style={{ marginBottom: '0.25rem' }}>
+            <Callsign call={p.frame.source.call} ssid={p.frame.source.ssid} />
+          </div>
+        ))}
+      </div>
+      <div style={{ marginTop: '0.5rem', fontSize: '0.875rem', color: '#666' }}>
+        Click to zoom in
+      </div>
+    </div>
+  );
+};
+
+/**
+ * Get icon for an APRS packet marker
+ */
+const getPacketIcon = (item: ClusterableItem): DivIcon | null => {
+  const packet = item as APRSPacketRecord;
+  if (isValidSymbol(packet.symbol)) {
+    return createAPRSIcon(packet.symbol!);
+  }
+  return null; // Will use default blue circle
+};
+
+const APRSMapPane: React.FC<{
+  packet: APRSPacketRecord | null;
+  packets: APRSPacketRecord[];
+  onSelectPacket: (packet: APRSPacketRecord) => void;
+}> = ({ packet, packets, onSelectPacket }) => {
   const hasPosition = packet && packet.latitude && packet.longitude;
 
   // Create bounds from center point (offset by ~2 degrees)
@@ -23,41 +254,101 @@ const APRSMapPane: React.FC<{ packet: APRSPacketRecord | null }> = ({ packet })
     return [[lat - offset, lng - offset], [lat + offset, lng + offset]];
   };
 
+  // Get latest location for each source
+  const latestBySource = useMemo(() => {
+    const sourceMap = new Map<string, APRSPacketRecord>();
+    packets.forEach(p => {
+      if (p.latitude !== undefined && p.longitude !== undefined) {
+        const sourceSsid = p.frame.source.ssid ?? '';
+        const key = `${p.frame.source.call}-${sourceSsid}`;
+        // Keep the most recent packet for each source
+        if (!sourceMap.has(key) || p.timestamp > sourceMap.get(key)!.timestamp) {
+          sourceMap.set(key, p);
+        }
+      }
+    });
+    return Array.from(sourceMap.values());
+  }, [packets]);
+
+  const overviewLocations = useMemo(() => filterByClusterRadius(latestBySource, 250), [latestBySource]);
+
+  const defaultBounds = useMemo(() => calculateBounds(overviewLocations), [overviewLocations]);
+
   const bounds = hasPosition
     ? createBoundsFromCenter(packet.latitude as number, packet.longitude as number)
-    : createBoundsFromCenter(50.0, 5.0);
+    : (defaultBounds ?? [[48.0, 3.0], [52.0, 7.0]]);
 
   return (
-    <MapContainer
-      bounds={bounds}
-      style={{ height: '100%', width: '100%' }}
-      className="aprs-map"
-    >
-      <TileLayer
-        url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
-      />
-      {hasPosition && (
-        <Marker position={[packet.latitude as number, packet.longitude as number]}>
-          <Popup>
-            <div>
-              <strong>{packet.frame.source.call}</strong>
-              {packet.frame.source.ssid && <span>-{packet.frame.source.ssid}</span>}
-              <br />
-              Lat: {packet.latitude?.toFixed(4)}, Lon: {packet.longitude?.toFixed(4)}
-              {packet.altitude && <div>Alt: {packet.altitude.toFixed(0)}m</div>}
-              {packet.speed && <div>Speed: {packet.speed}kt</div>}
-            </div>
-          </Popup>
-        </Marker>
-      )}
+    <Card className="data-table-card h-100" style={{ display: 'flex', flexDirection: 'column', padding: 0 }}>
+      <MapContainer
+        bounds={bounds}
+        style={{ flex: 1, width: '100%' }}
+        className="aprs-map"
+      >
+        <MapPanHandler packet={packet} defaultBounds={defaultBounds} />
+        <TileLayer
+          url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
+        />
+        {/* Clustered markers for latest location per source */}
+        <ClusteredMarkers<ClusterableItem>
+          items={overviewLocations}
+          getItemKey={(item) => getPacketKey(item as APRSPacketRecord)}
+          onItemClick={(item) => onSelectPacket(item as APRSPacketRecord)}
+          getIcon={getPacketIcon}
+          renderPopupContent={(item) => renderPacketPopup(item as APRSPacketRecord)}
+          renderClusterPopupContent={renderClusterPopup}
+        />
+        {/* Highlight selected packet - use APRS symbol or red circle */}
+        {hasPosition && (
+          isValidSymbol(packet.symbol) ? (
+            <Marker
+              position={[packet.latitude as number, packet.longitude as number]}
+              icon={createAPRSIcon(packet.symbol!)}
+            >
+              <Popup>
+                <div>
+                  <Callsign call={packet.frame.source.call} ssid={packet.frame.source.ssid} />
+                  <br />
+                  Lat: {packet.latitude?.toFixed(4)}, Lon: {packet.longitude?.toFixed(4)}
+                  {packet.altitude && <div>Alt: {packet.altitude.toFixed(0)}m</div>}
+                  {packet.speed && <div>Speed: {packet.speed}kt</div>}
+                  {packet.comment && <div style={{ marginTop: '0.25rem', fontSize: '0.875rem' }}>{packet.comment}</div>}
+                </div>
+              </Popup>
+            </Marker>
+          ) : (
+            <CircleMarker
+              center={[packet.latitude as number, packet.longitude as number]}
+              radius={8}
+              pathOptions={{
+                color: '#dc3545',
+                fillColor: '#dc3545',
+                fillOpacity: 0.8,
+                weight: 3,
+              }}
+            >
+              <Popup>
+                <div>
+                  <Callsign call={packet.frame.source.call} ssid={packet.frame.source.ssid} />
+                  <br />
+                  Lat: {packet.latitude?.toFixed(4)}, Lon: {packet.longitude?.toFixed(4)}
+                  {packet.altitude && <div>Alt: {packet.altitude.toFixed(0)}m</div>}
+                  {packet.speed && <div>Speed: {packet.speed}kt</div>}
+                  {packet.comment && <div style={{ marginTop: '0.25rem', fontSize: '0.875rem' }}>{packet.comment}</div>}
+                </div>
+              </Popup>
+            </CircleMarker>
+          )
+        )}
     </MapContainer>
+    </Card>
   );
 };
 
 const PacketDetailsPane: React.FC<{ packet: APRSPacketRecord | null }> = ({ packet }) => {
   if (!packet) {
     return (
-      <Card body className="aprs-detail-card h-100">
+      <Card body className="data-table-card h-100">
         <h6>Select a packet</h6>
         <div>Click any packet in the list to view details and map.</div>
       </Card>
@@ -66,36 +357,28 @@ const PacketDetailsPane: React.FC<{ packet: APRSPacketRecord | null }> = ({ pack
 
   return (
     <Stack gap={2} className="h-100 aprs-detail-stack">
-      <Card body className="aprs-detail-card">
+      <Card body className="data-table-card">
         <Stack direction="horizontal" gap={2} className="mb-2">
           <h6 className="mb-0">Packet Details</h6>
-          <Badge bg="primary">{packet.frame.source.call}</Badge>
+          <Badge bg="primary">
+            <Callsign call={packet.frame.source.call} ssid={packet.frame.source.ssid} plain />
+          </Badge>
         </Stack>
         <HeaderFact label="Timestamp" value={packet.timestamp.toLocaleTimeString()} />
         <HeaderFact
           label="Source"
-          value={
-            <>
-              {packet.frame.source.call}
-              {packet.frame.source.ssid && <span>-{packet.frame.source.ssid}</span>}
-            </>
-          }
+          value={<Callsign call={packet.frame.source.call} ssid={packet.frame.source.ssid} />}
         />
         {packet.radioName && <HeaderFact label="Radio" value={packet.radioName} />}
         <HeaderFact
           label="Destination"
-          value={
-            <>
-              {packet.frame.destination.call}
-              {packet.frame.destination.ssid && <span>-{packet.frame.destination.ssid}</span>}
-            </>
-          }
+          value={<Callsign call={packet.frame.destination.call} ssid={packet.frame.destination.ssid} />}
         />
         <HeaderFact label="Path" value={packet.frame.path.map((addr) => `${addr.call}${addr.ssid ? `-${addr.ssid}` : ''}${addr.isRepeated ? '*' : ''}`).join(', ') || 'None'} />
       </Card>
 
       {(packet.latitude || packet.longitude || packet.altitude || packet.speed || packet.course) && (
-        <Card body className="aprs-detail-card">
+        <Card body className="data-table-card">
           <h6 className="mb-2">Position Data</h6>
           {packet.latitude && <HeaderFact label="Latitude" value={packet.latitude.toFixed(6)} />}
           {packet.longitude && <HeaderFact label="Longitude" value={packet.longitude.toFixed(6)} />}
@@ -106,13 +389,13 @@ const PacketDetailsPane: React.FC<{ packet: APRSPacketRecord | null }> = ({ pack
       )}
 
       {packet.comment && (
-        <Card body className="aprs-detail-card">
+        <Card body className="data-table-card">
           <h6 className="mb-2">Comment</h6>
           <div>{packet.comment}</div>
         </Card>
       )}
 
-      <Card body className="aprs-detail-card">
+      <Card body className="data-table-card">
         <h6 className="mb-2">Raw Data</h6>
         <code className="aprs-raw-code">{packet.raw}</code>
       </Card>
@@ -122,11 +405,102 @@ const PacketDetailsPane: React.FC<{ packet: APRSPacketRecord | null }> = ({ pack
 
 const PacketTable: React.FC<{
   packets: APRSPacketRecord[];
-  selectedIndex: number | null;
-  onSelect: (index: number) => void;
-}> = ({ packets, selectedIndex, onSelect }) => {
-  const [searchParams, setSearchParams] = useSearchParams();
+  radioFilter?: string;
+  selectedPacketKey: string | null;
+  onSelectPacket: (packet: APRSPacketRecord) => void;
+  onClearSelection: () => void;
+  streamReady: boolean;
+}> = ({ packets, radioFilter, selectedPacketKey, onSelectPacket, onClearSelection, streamReady }) => {
+  const scrollRef = React.useRef<HTMLDivElement>(null);
+
+  const selectedIndex = useMemo(() => {
+    if (!selectedPacketKey) {
+      return null;
+    }
+    const index = packets.findIndex((packet) => getPacketKey(packet) === selectedPacketKey);
+    return index >= 0 ? index : null;
+  }, [packets, selectedPacketKey]);
+
+  const { showShortcuts, setShowShortcuts, shortcuts } = useKeyboardListNavigation({
+    itemCount: packets.length,
+    selectedIndex,
+    onSelectIndex: (index) => {
+      if (index === null) {
+        onClearSelection();
+        return;
+      }
+      const packet = packets[index];
+      if (packet) {
+        onSelectPacket(packet);
+      }
+    },
+    scrollContainerRef: scrollRef,
+  });
+
+  return (
+    <Card className="data-table-card h-100 d-flex flex-column">
+      <Card.Header className="data-table-header d-flex justify-content-between align-items-center">
+        <span>APRS Packets</span>
+        <div className="d-flex align-items-center gap-2">
+          <StreamStatus ready={streamReady} />
+        </div>
+      </Card.Header>
+      <Card.Body className="data-table-body p-0">
+        <div className="data-table-scroll" ref={scrollRef}>
+        <Table hover responsive className="data-table mb-0" size="sm">
+          <thead>
+            <tr>
+              <th>Time</th>
+              <th>&nbsp;</th>
+              <th>Source</th>
+              <th>Destination</th>
+              <th>&nbsp;</th>
+              <th>Comment</th>
+            </tr>
+          </thead>
+          <tbody>
+            {packets.map((packet, index) => (
+              <tr
+                key={getPacketKey(packet)}
+                data-nav-item="true"
+                className={selectedIndex === index ? 'is-selected' : ''}
+                onClick={() => onSelectPacket(packet)}
+              >
+                <td style={{ verticalAlign: 'top' }}>{packet.timestamp.toLocaleTimeString()}</td>
+                <td style={{ verticalAlign: 'top' }}>
+                  <CountryFlag callsign={packet.frame.source.call} size={1.25} />
+                </td>
+                <td style={{ verticalAlign: 'top' }}>
+                  <Callsign call={packet.frame.source.call} ssid={packet.frame.source.ssid} />
+                </td>
+                <td style={{ verticalAlign: 'top' }}>
+                  <Callsign call={packet.frame.destination.call} ssid={packet.frame.destination.ssid} />
+                </td>
+                <td style={{ verticalAlign: 'top' }}>
+                  {packet.symbol && <APRSSymbol symbol={packet.symbol} size={24} />}
+                </td>
+                <td style={{ verticalAlign: 'top' }}>{packet.comment || '-'}</td>
+              </tr>
+            ))}
+          </tbody>
+        </Table>
+        </div>
+      </Card.Body>
+      {radioFilter && <Card.Footer className="text-muted" style={{ fontSize: '0.875rem' }}>Filtered by radio: {radioFilter}</Card.Footer>}
+      <KeyboardShortcutsModal
+        show={showShortcuts}
+        onHide={() => setShowShortcuts(false)}
+        shortcuts={shortcuts}
+      />
+    </Card>
+  );
+};
+
+const APRSPacketsView: React.FC = () => {
+  const { packets, streamReady } = useAPRSData();
+  const [searchParams] = useSearchParams();
   const radioFilter = searchParams.get('radio') || undefined;
+  const [selectedPacketKey, setSelectedPacketKey] = useState<string | null>(null);
 
   // Filter packets by radio name if specified
   const filteredPackets = useMemo(() => {
@@ -134,83 +508,20 @@ const PacketTable: React.FC<{
     return packets.filter(packet => packet.radioName === radioFilter);
   }, [packets, radioFilter]);
 
-  return (
-    <Card className="aprs-table-card h-100 d-flex flex-column">
-      <Card.Header className="aprs-table-header">APRS Packets</Card.Header>
-      <Card.Body className="aprs-table-body p-0">
-        {radioFilter && (
-          <Alert variant="info" className="m-2 mb-0 d-flex align-items-center justify-content-between" style={{ fontSize: '0.875rem', padding: '0.5rem 0.75rem' }}>
-            <span>Filtering by radio: <strong>{radioFilter}</strong></span>
-            <button
-              type="button"
-              className="btn-close btn-close-white"
-              style={{ fontSize: '0.7rem' }}
-              onClick={() => {
-                const newParams = new URLSearchParams(searchParams);
-                newParams.delete('radio');
-                setSearchParams(newParams);
-              }}
-              aria-label="Clear radio filter"
-            />
-          </Alert>
-        )}
-        <div className="aprs-table-scroll">
-        <Table hover responsive className="aprs-table mb-0" size="sm">
-          <thead>
-            <tr>
-              <th>Time</th>
-              <th>Source</th>
-              <th>Destination</th>
-              <th>Position</th>
-              <th>Comment</th>
-            </tr>
-          </thead>
-          <tbody>
-            {filteredPackets.map((packet, index) => (
-              <tr
-                key={`${packet.frame.source.call}-${packet.timestamp.toISOString()}`}
-                className={selectedIndex === index ? 'is-selected' : ''}
-                onClick={() => onSelect(index)}
-              >
-                <td>{packet.timestamp.toLocaleTimeString()}</td>
-                <td>
-                  {packet.frame.source.call}
-                  {packet.frame.source.ssid && <span>-{packet.frame.source.ssid}</span>}
-                </td>
-                <td>
-                  {packet.frame.destination.call}
-                  {packet.frame.destination.ssid && <span>-{packet.frame.destination.ssid}</span>}
-                </td>
-                <td>{packet.latitude && packet.longitude ? '✓' : '-'}</td>
-                <td>{packet.comment || '-'}</td>
-              </tr>
-            ))}
-          </tbody>
-        </Table>
-        </div>
-      </Card.Body>
-    </Card>
-  );
-};
-
-const APRSPacketsView: React.FC = () => {
-  const { packets } = useAPRSData();
-  const [selectedIndex, setSelectedIndex] = useState<number | null>(null);
-
   const selectedPacket = useMemo(() => {
-    if (selectedIndex === null || selectedIndex < 0 || selectedIndex >= packets.length) {
+    if (!selectedPacketKey) {
       return null;
     }
-    return packets[selectedIndex] ?? null;
-  }, [packets, selectedIndex]);
+    return filteredPackets.find((packet) => getPacketKey(packet) === selectedPacketKey) ?? null;
+  }, [filteredPackets, selectedPacketKey]);
 
   return (
     <VerticalSplit
-      ratio="50/50"
-      left={<PacketTable packets={packets} selectedIndex={selectedIndex} onSelect={setSelectedIndex} />}
+      ratio="1:1"
+      left={<PacketTable packets={filteredPackets} radioFilter={radioFilter} selectedPacketKey={selectedPacketKey} onSelectPacket={(packet) => setSelectedPacketKey(getPacketKey(packet))} onClearSelection={() => setSelectedPacketKey(null)} streamReady={streamReady} />}
       right={
         <HorizontalSplit
-          top={<APRSMapPane packet={selectedPacket} />}
+          top={<APRSMapPane packet={selectedPacket} packets={filteredPackets} onSelectPacket={(packet) => setSelectedPacketKey(getPacketKey(packet))} />}
           bottom={<PacketDetailsPane packet={selectedPacket} />}
         />
       }

ui/src/pages/meshcore/MeshCoreData.tsx

@@ -1,11 +1,24 @@
 import React, { useEffect, useMemo, useState } from 'react';
 import { bytesToHex } from '@noble/hashes/utils.js';
+import ArrowBackIcon from '@mui/icons-material/ArrowBack';
+import ArrowForwardIcon from '@mui/icons-material/ArrowForward';
+import BrandingWatermarkIcon from '@mui/icons-material/BrandingWatermark';
+import PersonIcon from '@mui/icons-material/Person';
+import QuestionMarkIcon from '@mui/icons-material/QuestionMark';
+import ReplyIcon from '@mui/icons-material/Reply';
+import RouteIcon from '@mui/icons-material/Route';
+import SensorsIcon from '@mui/icons-material/Sensors';
+import SignalCellularAltIcon from '@mui/icons-material/SignalCellularAlt';
+import StorageIcon from '@mui/icons-material/Storage';
 
 import { Packet } from '../../protocols/meshcore';
 import { NodeType, PayloadType, RouteType } from '../../protocols/meshcore.types';
 import { MeshCoreStream } from '../../services/MeshCoreStream';
 import type { MeshCoreMessage } from '../../services/MeshCoreStream';
-import type { Payload } from '../../protocols/meshcore.types';
+import type { Payload, AdvertPayload } from '../../protocols/meshcore.types';
+import API from '../../services/API';
+import MeshCoreServiceImpl from '../../services/MeshCoreService';
+import { base64ToBytes } from '../../util';
 
 import {
   MeshCoreDataContext,
@@ -40,6 +53,38 @@ export const payloadValueByName = Object.fromEntries(
   Object.entries(PayloadType).map(([name, value]) => [name, value])
 ) as Record<string, number>;
 
+export const PayloadTypeIcon: React.FC<{ payloadType: number }> = ({ payloadType }) => {
+  switch (payloadType) {
+    case PayloadType.REQUEST:
+      return <ArrowForwardIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.RESPONSE:
+      return <ArrowBackIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.TEXT:
+      return <PersonIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.ACK:
+      return <ReplyIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.ADVERT:
+      return <SignalCellularAltIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.GROUP_TEXT:
+      return <PersonIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.GROUP_DATA:
+      return <StorageIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.ANON_REQ:
+      return <ArrowForwardIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.PATH:
+      return <RouteIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.TRACE:
+      return <RouteIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.MULTIPART:
+      return <BrandingWatermarkIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.CONTROL:
+      return <SensorsIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    case PayloadType.RAW_CUSTOM:
+      return <QuestionMarkIcon className="meshcore-payload-icon" titleAccess={payloadDisplayByValue[payloadType]} />;
+    default:
+      return <QuestionMarkIcon className="meshcore-payload-icon" titleAccess="Unknown" />;
+  }
+};
 export const nodeTypeValueByName = Object.fromEntries(
   Object.entries(NodeType).map(([name, value]) => [name, value])
 ) as Record<string, number>;
@@ -116,61 +161,50 @@ export const routeValueByUrl: Record<string, number> = Object.fromEntries(
   })
 ) as Record<string, number>;
 
-export const asHex = (value: Uint8Array): string => bytesToHex(value);
+const DISCARD_DUPLICATE_PATH_PACKETS = true;
 
-const payloadTypeList = [
-  PayloadType.REQUEST,
-  PayloadType.RESPONSE,
-  PayloadType.TEXT,
-  PayloadType.ACK,
-  PayloadType.ADVERT,
-  PayloadType.GROUP_TEXT,
-  PayloadType.GROUP_DATA,
-  PayloadType.ANON_REQ,
-  PayloadType.PATH,
-  PayloadType.TRACE,
-  PayloadType.MULTIPART,
-  PayloadType.CONTROL,
-  PayloadType.RAW_CUSTOM,
-] as const;
-
-const nodeTypeList = [
-  NodeType.TYPE_CHAT_NODE,
-  NodeType.TYPE_REPEATER,
-  NodeType.TYPE_ROOM_SERVER,
-  NodeType.TYPE_SENSOR,
-] as const;
-
-const makePayloadBytes = (payloadType: number, seed: number): Uint8Array => {
-  switch (payloadType) {
-    case PayloadType.REQUEST:
-      return new Uint8Array([0x00, 0x12, 0x34, 0x56, 0x78, seed]);
-    case PayloadType.RESPONSE:
-      return new Uint8Array([0x01, 0x78, 0x56, 0x34, 0x12, seed]);
-    case PayloadType.TEXT:
-      return new Uint8Array([0xa1, 0xb2, 0x11, 0x22, 0x54, 0x58, 0x54, seed]);
-    case PayloadType.ACK:
-      return new Uint8Array([0x03, seed]);
-    case PayloadType.ADVERT:
-      return new Uint8Array([0x04, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, seed]);
-    case PayloadType.GROUP_TEXT:
-      return new Uint8Array([0xc4, 0x23, 0x99, 0x44, 0x55, 0x66, seed]);
-    case PayloadType.GROUP_DATA:
-      return new Uint8Array([0x34, 0x98, 0x76, 0x10, seed, 0xee]);
-    case PayloadType.ANON_REQ:
-      return new Uint8Array([0xfe, ...Array.from({ length: 32 }, (_, i) => (seed + i * 5) & 0xff), 0x55, 0xaa, 0x42, seed]);
-    case PayloadType.PATH:
-      return new Uint8Array([0x08, 0x11, 0x22, 0x33, 0x44, 0x55, seed]);
-    case PayloadType.TRACE:
-      return new Uint8Array([0x12, 0x31, 0x51, seed]);
-    case PayloadType.MULTIPART:
-      return new Uint8Array([0x01, seed, 0x02, 0x03, 0x04]);
-    case PayloadType.CONTROL:
-      return new Uint8Array([0x90, 0x01, 0x02, seed]);
-    case PayloadType.RAW_CUSTOM:
-    default:
-      return new Uint8Array([0xde, 0xad, 0xbe, 0xef, seed]);
+const getPacketPathKey = (raw: Uint8Array): string => {
+  if (raw.length < 2) {
+    return '';
   }
+
+  const pathField = raw[1];
+  const hashSize = (pathField >> 6) + 1;
+  const hashCount = pathField & 0x3f;
+
+  if (hashCount === 0 || hashSize === 4) {
+    return '';
+  }
+
+  const pathByteLength = hashCount * hashSize;
+  const availablePathBytes = Math.min(pathByteLength, Math.max(raw.length - 2, 0));
+  if (availablePathBytes <= 0) {
+    return '';
+  }
+
+  return bytesToHex(raw.slice(2, 2 + availablePathBytes));
+};
+
+const dedupeByHashAndPath = (packets: MeshCorePacketRecord[]): MeshCorePacketRecord[] => {
+  if (!DISCARD_DUPLICATE_PATH_PACKETS) {
+    return packets;
+  }
+
+  const sortedByReceiveTime = [...packets].sort((a, b) => a.timestamp.getTime() - b.timestamp.getTime());
+  const seen = new Set<string>();
+  const deduped: MeshCorePacketRecord[] = [];
+
+  sortedByReceiveTime.forEach((packet) => {
+    const signature = `${packet.hash}:${getPacketPathKey(packet.raw)}`;
+    if (seen.has(signature)) {
+      return;
+    }
+
+    seen.add(signature);
+    deduped.push(packet);
+  });
+
+  return deduped;
 };
 
 const summarizePayload = (payloadType: number, decodedPayload: Payload | undefined, payloadBytes: Uint8Array): string => {
@@ -187,7 +221,12 @@ const summarizePayload = (payloadType: number, decodedPayload: Payload | undefin
     case PayloadType.ACK:
       return 'acknowledgement';
     case PayloadType.ADVERT:
-      return 'node advertisement';
+      const advert = decodedPayload as AdvertPayload;
+      console.log('advert', advert);
+      if (advert && decodedPayload && 'appdata' in decodedPayload && advert.appdata && 'name' in advert.appdata) {
+        return `advertisement: ${advert.appdata.name}`;
+      }
+      return 'advertisement';
     case PayloadType.GROUP_TEXT:
       if (decodedPayload && 'channelHash' in decodedPayload) {
         return `group channel=${decodedPayload.channelHash}`;
@@ -210,55 +249,13 @@ const summarizePayload = (payloadType: number, decodedPayload: Payload | undefin
       if (decodedPayload && 'flags' in decodedPayload && typeof decodedPayload.flags === 'number') {
         return `control flags=0x${decodedPayload.flags.toString(16)}`;
       }
-      return `control raw=${asHex(payloadBytes.slice(0, 4))}`;
+      return `control raw=${bytesToHex(payloadBytes.slice(0, 4))}`;
     case PayloadType.RAW_CUSTOM:
     default:
-      return `raw=${asHex(payloadBytes.slice(0, Math.min(6, payloadBytes.length)))}`;
+      return `raw=${bytesToHex(payloadBytes.slice(0, Math.min(6, payloadBytes.length)))}`;
   }
 };
 
-const createMockRecord = (index: number): MeshCorePacketRecord => {
-  const payloadType = payloadTypeList[index % payloadTypeList.length];
-  const nodeType = nodeTypeList[index % nodeTypeList.length];
-  const version = 1;
-  const routeType = RouteType.FLOOD;
-  const path = new Uint8Array([(0x11 + index) & 0xff, (0x90 + index) & 0xff, (0xa0 + index) & 0xff]);
-  const payload = makePayloadBytes(payloadType, index);
-
-  const header = ((version & 0x03) << 6) | ((payloadType & 0x0f) << 2) | (routeType & 0x03);
-  const pathLength = path.length & 0x3f;
-  const raw = new Uint8Array([header, pathLength, ...path, ...payload]);
-
-  const packet = new Packet();
-  packet.parse(raw);
-
-  let decodedPayload: Payload | undefined;
-  try {
-    decodedPayload = packet.decode();
-  } catch {
-    decodedPayload = undefined;
-  }
-
-  return {
-    timestamp: new Date(Date.now() - index * 75_000),
-    hash: asHex(packet.hash()),
-    nodeType,
-    payloadType,
-    routeType,
-    version,
-    path,
-    raw,
-    decodedPayload,
-    payloadSummary: summarizePayload(payloadType, decodedPayload, payload),
-  };
-};
-
-const createMockData = (count = 48): MeshCorePacketRecord[] => {
-  return Array.from({ length: count }, (_, index) => createMockRecord(index)).sort(
-    (a, b) => b.timestamp.getTime() - a.timestamp.getTime()
-  );
-};
-
 const toGroupChats = (packets: MeshCorePacketRecord[]): MeshCoreGroupChatRecord[] => {
   return packets
     .filter((packet) => packet.payloadType === PayloadType.GROUP_TEXT || packet.payloadType === PayloadType.TEXT)
@@ -307,12 +304,63 @@ const toMapPoints = (packets: MeshCorePacketRecord[]): MeshCoreNodePoint[] => {
 };
 
 export const MeshCoreDataProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
-  const [packets, setPackets] = useState<MeshCorePacketRecord[]>(() => createMockData());
+  const [packets, setPackets] = useState<MeshCorePacketRecord[]>([]);
   const [streamReady, setStreamReady] = useState(false);
 
   const stream = useMemo(() => new MeshCoreStream(false), []);
+  const meshCoreService = useMemo(() => new MeshCoreServiceImpl(API), []);
 
   useEffect(() => {
+    let isMounted = true;
+
+    const fetchPackets = async () => {
+      try {
+        const fetchedPackets = await meshCoreService.fetchPackets();
+        if (!isMounted) {
+          return;
+        }
+
+        const records: MeshCorePacketRecord[] = fetchedPackets.map((packet) => {
+          const raw = base64ToBytes(packet.raw);
+
+          let decodedPayload: Payload | undefined;
+          try {
+            const p = new Packet();
+            p.parse(raw);
+            decodedPayload = p.decode();
+          } catch {
+            decodedPayload = undefined;
+          }
+
+          const pathLength = raw[1] & 0x3f;
+          const payloadBytes = raw.slice(2 + pathLength);
+
+          return {
+            timestamp: new Date(packet.received_at),
+            hash: packet.hash,
+            nodeType: packet.payload_type === PayloadType.ADVERT ? NodeType.TYPE_UNKNOWN : 0,
+            payloadType: packet.payload_type,
+            routeType: packet.route_type,
+            version: packet.version,
+            path: raw.slice(2, 2 + pathLength),
+            raw,
+            decodedPayload,
+            payloadSummary: summarizePayload(packet.payload_type, decodedPayload, payloadBytes),
+          };
+        });
+
+        setPackets((prev) => {
+          const merged = dedupeByHashAndPath([...records, ...prev]);
+          return merged
+            .sort((a, b) => b.timestamp.getTime() - a.timestamp.getTime())
+            .slice(0, 500);
+        });
+      } catch (error) {
+        console.error('Failed to fetch MeshCore packets:', error);
+      }
+    };
+
+    fetchPackets();
     stream.connect();
 
     const unsubscribeState = stream.subscribeToState((state) => {
@@ -356,18 +404,21 @@ export const MeshCoreDataProvider: React.FC<{ children: React.ReactNode }> = ({
             packet.payloadSummary = `raw=${bytesToHex(packet.raw.slice(0, Math.min(6, packet.raw.length)))}`;
           }
 
-          // Add to front of list, keeping last 500 packets
-          return [packet, ...prev].slice(0, 500);
+          const merged = dedupeByHashAndPath([packet, ...prev]);
+          return merged
+            .sort((a, b) => b.timestamp.getTime() - a.timestamp.getTime())
+            .slice(0, 500);
         });
       }
     );
 
     return () => {
+      isMounted = false;
       unsubscribeState();
       unsubscribePackets();
       stream.disconnect();
     };
-  }, [stream]);
+  }, [stream, meshCoreService]);
 
   const groupChats = useMemo(() => toGroupChats(packets), [packets]);
   const mapPoints = useMemo(() => toMapPoints(packets), [packets]);

ui/src/pages/meshcore/MeshCoreGroupChatView.tsx

@@ -7,6 +7,8 @@ import MeshCoreServiceImpl, { type MeshCoreGroupRecord } from '../../services/Me
 import API from '../../services/API';
 import type { MeshCoreGroupChatRecord } from './MeshCoreContext';
 import { KeyManager, Packet } from '../../protocols/meshcore';
+import KeyboardShortcutsModal from '../../components/KeyboardShortcutsModal';
+import { useKeyboardListNavigation } from '../../hooks/useKeyboardListNavigation';
 
 const meshCoreService = new MeshCoreServiceImpl(API);
 
@@ -14,30 +16,58 @@ const GroupList: React.FC<{
   groups: MeshCoreGroupRecord[];
   selectedGroupId: number | null;
   onSelectGroup: (group: MeshCoreGroupRecord) => void;
+  onClearSelection: () => void;
   isLoading: boolean;
   error: string | null;
   streamReady: boolean;
-}> = ({ groups, selectedGroupId, onSelectGroup, isLoading, error, streamReady }) => {
+}> = ({ groups, selectedGroupId, onSelectGroup, onClearSelection, isLoading, error, streamReady }) => {
+  const scrollRef = useRef<HTMLDivElement>(null);
+  const selectedIndex = useMemo(() => {
+    if (selectedGroupId === null) {
+      return null;
+    }
+    const index = groups.findIndex((group) => group.id === selectedGroupId);
+    return index >= 0 ? index : null;
+  }, [groups, selectedGroupId]);
+
+  const { showShortcuts, setShowShortcuts, shortcuts } = useKeyboardListNavigation({
+    itemCount: groups.length,
+    selectedIndex,
+    onSelectIndex: (index) => {
+      if (index === null) {
+        onClearSelection();
+        return;
+      }
+      const group = groups[index];
+      if (group) {
+        onSelectGroup(group);
+      }
+    },
+    scrollContainerRef: scrollRef,
+    rowSelector: '[data-nav-item="true"]',
+  });
+
   return (
-    <Card className="meshcore-table-card h-100 d-flex flex-column">
-      <Card.Header className="meshcore-table-header d-flex justify-content-between align-items-center">
+    <Card className="data-table-card h-100 d-flex flex-column">
+      <Card.Header className="data-table-header d-flex justify-content-between align-items-center">
         <span>Groups</span>
         <div className="d-flex align-items-center gap-2">
           {isLoading && <Spinner animation="border" size="sm" style={{ width: '1rem', height: '1rem' }} />}
           <StreamStatus ready={streamReady} />
         </div>
       </Card.Header>
-      <Card.Body className="meshcore-table-body p-0 d-flex flex-column">
+      <Card.Body className="data-table-body p-0 d-flex flex-column">
         {error && <Alert variant="danger" className="m-2 mb-0">{error}</Alert>}
         {groups.length === 0 && !isLoading && (
           <div className="p-3 text-secondary text-center">
             {error ? 'Failed to load groups' : 'No groups available'}
           </div>
         )}
-        <div className="meshcore-table-scroll">
+        <div className="data-table-scroll" ref={scrollRef}>
           {groups.map((group) => (
             <div
               key={group.id}
+              data-nav-item="true"
               onClick={() => onSelectGroup(group)}
               className={`list-item ${selectedGroupId === group.id ? 'is-selected' : ''}`}
             >
@@ -50,6 +80,11 @@ const GroupList: React.FC<{
           ))}
         </div>
       </Card.Body>
+      <KeyboardShortcutsModal
+        show={showShortcuts}
+        onHide={() => setShowShortcuts(false)}
+        shortcuts={shortcuts}
+      />
     </Card>
   );
 };
@@ -63,7 +98,7 @@ const GroupMessagesPane: React.FC<{
 }> = ({ group, messages, isLoading, error, streamReady }) => {
   if (!group) {
     return (
-      <Card body className="meshcore-detail-card h-100 d-flex flex-column justify-content-center align-items-center">
+      <Card body className="data-table-card h-100 d-flex flex-column justify-content-center align-items-center">
         <h6 className="mb-2">Select a group</h6>
         <div className="text-secondary text-center">Click a group on the left to view messages</div>
       </Card>
@@ -71,20 +106,20 @@ const GroupMessagesPane: React.FC<{
   }
 
   return (
-    <Card className="meshcore-table-card h-100 d-flex flex-column">
-      <Card.Header className="meshcore-table-header d-flex justify-content-between align-items-center">
+    <Card className="data-table-card h-100 d-flex flex-column">
+      <Card.Header className="data-table-header d-flex justify-content-between align-items-center">
         <span>{group.name}</span>
         <div className="d-flex align-items-center gap-2">
           {isLoading && <Spinner animation="border" size="sm" style={{ width: '1rem', height: '1rem' }} />}
           <StreamStatus ready={streamReady} />
         </div>
       </Card.Header>
-      <Card.Body className="meshcore-table-body p-0 d-flex flex-column">
+      <Card.Body className="data-table-body p-0 d-flex flex-column">
         {error && <Alert variant="danger" className="m-2 mb-0">{error}</Alert>}
         {messages.length === 0 && !isLoading && (
           <div className="p-3 text-secondary text-center">No messages in this group</div>
         )}
-        <div className="meshcore-table-scroll">
+        <div className="data-table-scroll">
           <Stack gap={3} className="p-3">
             {messages.map((message) => (
               <div key={message.hash + message.timestamp.toISOString()} className="meshcore-message-item">
@@ -173,7 +208,7 @@ const MeshCoreGroupChatView: React.FC = () => {
               const decrypted = keyManagerRef.current.decryptGroup(
                 packet.channel_hash,
                 payload.cipherText as Uint8Array,
-                payload.cipherMAC as Uint8Array
+                payload.cipherMAC
               );
 
               messages.push({
@@ -233,6 +268,7 @@ const MeshCoreGroupChatView: React.FC = () => {
           groups={groups}
           selectedGroupId={selectedGroup?.id ?? null}
           onSelectGroup={handleSelectGroup}
+          onClearSelection={() => setSelectedGroup(null)}
           isLoading={isLoadingGroups}
           error={groupsError}
           streamReady={streamReady}

ui/src/pages/meshcore/MeshCoreMapView.tsx

@@ -9,12 +9,12 @@ const MeshCoreMapView: React.FC = () => {
 
   return (
     <Full className="meshcore-map-view">
-      <Card className="meshcore-table-card h-100 d-flex flex-column">
-        <Card.Header className="meshcore-table-header d-flex justify-content-between align-items-center">
+      <Card className="data-table-card h-100 d-flex flex-column">
+        <Card.Header className="data-table-header d-flex justify-content-between align-items-center">
           <span>Node Map</span>
           <Badge bg={streamReady ? 'success' : 'secondary'}>{streamReady ? 'stream ready' : 'stream offline'}</Badge>
         </Card.Header>
-        <Card.Body className="meshcore-table-body d-flex flex-column gap-3">
+        <Card.Body className="data-table-body d-flex flex-column gap-3">
           <div className="meshcore-map-canvas">
             {mapPoints.map((point) => (
               <div
@@ -29,8 +29,8 @@ const MeshCoreMapView: React.FC = () => {
             ))}
           </div>
 
-          <div className="meshcore-table-scroll">
-            <Table responsive size="sm" className="meshcore-table mb-0">
+          <div className="data-table-scroll">
+            <Table responsive size="sm" className="data-table mb-0">
               <thead>
                 <tr>
                   <th>Node</th>

ui/src/pages/meshcore/MeshCorePacketDetailsPane.tsx

@@ -0,0 +1,424 @@
+import React, { useMemo, useState } from 'react';
+import { bytesToHex } from '@noble/hashes/utils.js';
+
+import { Badge, Card, Stack } from 'react-bootstrap';
+
+import type { MeshCorePacketRecord } from './MeshCoreContext';
+import {
+  payloadDisplayByValue,
+  routeDisplayByValue,
+} from './MeshCoreData';
+
+const HeaderFact: React.FC<{ label: string; value: React.ReactNode }> = ({ label, value }) => (
+  <div className="meshcore-fact-row">
+    <span className="meshcore-fact-label">{label}</span>
+    <span className="meshcore-fact-value">{value}</span>
+  </div>
+);
+
+const toBitString = (value: number): string => value.toString(2).padStart(8, '0');
+
+const byteHex = (value: number | undefined): string => {
+  if (typeof value !== 'number') {
+    return '0x??';
+  }
+  return `0x${value.toString(16).padStart(2, '0')}`;
+};
+
+const bitSlice = (value: number, msb: number, lsb: number): number => {
+  const width = msb - lsb + 1;
+  const mask = (1 << width) - 1;
+  return (value >> lsb) & mask;
+};
+
+const toAscii = (value: number): string => {
+  if (value >= 32 && value <= 126) {
+    return String.fromCharCode(value);
+  }
+  return '.';
+};
+
+const asRecord = (value: unknown): Record<string, unknown> | null => {
+  if (value && typeof value === 'object') {
+    return value as Record<string, unknown>;
+  }
+  return null;
+};
+
+interface BitFieldSpec {
+  msb: number;
+  lsb: number;
+  shortLabel: string;
+  label: string;
+  value: number;
+}
+
+const buildBitPointerLine = (msb: number, lsb: number): string => {
+  const width = 15;
+  const start = (7 - msb) * 2;
+  const end = (7 - lsb) * 2;
+  const chars = Array.from({ length: width }, () => ' ');
+
+  if (start === end) {
+    chars[start] = '↑';
+    return chars.join('');
+  }
+
+  chars[start] = '└';
+  for (let i = start + 1; i < end; i += 1) {
+    chars[i] = '─';
+  }
+  chars[end] = '┘';
+  return chars.join('');
+};
+
+const renderBitPointerArt = (
+  value: number,
+  fields: BitFieldSpec[],
+  mode: 'compact' | 'verbose'
+): string => {
+  const header = 'bits: 7 6 5 4 3 2 1 0';
+  const bitRow = `val : ${toBitString(value).split('').join(' ')}`;
+  const pointers = fields.map((field) => {
+    const name = mode === 'compact' ? field.shortLabel : field.label;
+    return `     ${buildBitPointerLine(field.msb, field.lsb)} ${name} = ${field.value}`;
+  });
+
+  if (mode === 'compact') {
+    const legend = `key : ${fields.map((field) => field.shortLabel).join(', ')}`;
+    return [header, bitRow, ...pointers, legend].join('\n');
+  }
+
+  return [header, bitRow, ...pointers].join('\n');
+};
+
+interface ByteDissectionRow {
+  index: number;
+  byte: number;
+  zone: 'header' | 'path' | 'payload';
+}
+
+const buildByteDissection = (packet: MeshCorePacketRecord): {
+  rows: ByteDissectionRow[];
+  pathHashSize: number;
+  pathHashCount: number;
+  pathBytesAvailable: number;
+  payloadOffset: number;
+} => {
+  const pathField = packet.raw.length > 1 ? packet.raw[1] : 0;
+  const pathHashSize = bitSlice(pathField, 7, 6) + 1;
+  const pathHashCount = bitSlice(pathField, 5, 0);
+  const pathBytesExpected = pathHashCount === 0 || pathHashSize === 4 ? 0 : pathHashCount * pathHashSize;
+  const pathBytesAvailable = Math.min(pathBytesExpected, Math.max(packet.raw.length - 2, 0));
+  const payloadOffset = 2 + pathBytesAvailable;
+
+  const rows: ByteDissectionRow[] = Array.from(packet.raw).map((byte, index) => {
+    if (index <= 1) {
+      return {
+        index,
+        byte,
+        zone: 'header',
+      };
+    }
+
+    if (index < payloadOffset) {
+      return {
+        index,
+        byte,
+        zone: 'path',
+      };
+    }
+
+    return {
+      index,
+      byte,
+      zone: 'payload',
+    };
+  });
+
+  return {
+    rows,
+    pathHashSize,
+    pathHashCount,
+    pathBytesAvailable,
+    payloadOffset,
+  };
+};
+
+const WireDissector: React.FC<{ packet: MeshCorePacketRecord }> = ({ packet }) => {
+  const [bitArtMode, setBitArtMode] = useState<'compact' | 'verbose'>('compact');
+
+  const { rows, pathHashSize, pathHashCount, pathBytesAvailable, payloadOffset } = useMemo(
+    () => buildByteDissection(packet),
+    [packet]
+  );
+
+  const headerByte = packet.raw[0] ?? 0;
+  const pathByte = packet.raw[1] ?? 0;
+  const pathBytes = packet.raw.slice(2, payloadOffset);
+  const payloadBytes = packet.raw.slice(payloadOffset);
+
+  const hexdumpRows = useMemo(() => {
+    const chunks: ByteDissectionRow[][] = [];
+    for (let i = 0; i < rows.length; i += 16) {
+      chunks.push(rows.slice(i, i + 16));
+    }
+    return chunks.map((chunk, rowIndex) => ({
+      offset: rowIndex * 16,
+      cells: [...chunk, ...Array<ByteDissectionRow | null>(Math.max(16 - chunk.length, 0)).fill(null)],
+    }));
+  }, [rows]);
+
+  return (
+    <Card body className="data-table-card">
+      <Stack direction="horizontal" className="justify-content-between align-items-center mb-2">
+        <h6 className="mb-0">Packet Bytes (Wire View)</h6>
+        <button
+          type="button"
+          className="meshcore-bitart-toggle"
+          onClick={() => setBitArtMode((prev) => (prev === 'compact' ? 'verbose' : 'compact'))}
+          title="Toggle compact/verbose bit pointer annotations"
+        >
+          Bit Art: {bitArtMode === 'compact' ? 'Compact' : 'Verbose'}
+        </button>
+      </Stack>
+      <div className="meshcore-wire-subtitle">Protocol tree + hex dump, similar to a packet analyzer output</div>
+
+      <div className="meshcore-ws-layout mt-3">
+        <div className="meshcore-ws-panel">
+          <div className="meshcore-ws-panel-title">Packet Details</div>
+          <ul className="meshcore-ws-tree">
+            <li>
+              <span className="meshcore-ws-node">Frame 1: {packet.raw.length} bytes on wire ({packet.raw.length * 8} bits)</span>
+            </li>
+            <li>
+              <span className="meshcore-ws-node">MeshCore Header</span>
+              <ul>
+                <li>Byte[0] = <code>{byteHex(headerByte)}</code> = <code>{toBitString(headerByte)}</code></li>
+                <li>b7..b6: Version = <strong>{bitSlice(headerByte, 7, 6)}</strong></li>
+                <li>b5..b2: Payload Type = <strong>{bitSlice(headerByte, 5, 2)}</strong> ({payloadDisplayByValue[packet.payloadType] ?? 'Unknown'})</li>
+                <li>b1..b0: Route Type = <strong>{bitSlice(headerByte, 1, 0)}</strong> ({routeDisplayByValue[packet.routeType] ?? 'Unknown'})</li>
+                <li>
+                  <pre className="meshcore-bit-art">
+                    {renderBitPointerArt(headerByte, [
+                      {
+                        msb: 7,
+                        lsb: 6,
+                        shortLabel: 'ver',
+                        label: 'version (b7..b6)',
+                        value: bitSlice(headerByte, 7, 6),
+                      },
+                      {
+                        msb: 5,
+                        lsb: 2,
+                        shortLabel: 'ptype',
+                        label: 'payload_type (b5..b2)',
+                        value: bitSlice(headerByte, 5, 2),
+                      },
+                      {
+                        msb: 1,
+                        lsb: 0,
+                        shortLabel: 'route',
+                        label: 'route_type (b1..b0)',
+                        value: bitSlice(headerByte, 1, 0),
+                      },
+                    ], bitArtMode)}
+                  </pre>
+                </li>
+              </ul>
+            </li>
+            <li>
+              <span className="meshcore-ws-node">Path Descriptor</span>
+              <ul>
+                <li>Byte[1] = <code>{byteHex(pathByte)}</code> = <code>{toBitString(pathByte)}</code></li>
+                <li>b7..b6: Hash size = ({bitSlice(pathByte, 7, 6)} + 1) = <strong>{pathHashSize}</strong></li>
+                <li>b5..b0: Hash count = <strong>{pathHashCount}</strong></li>
+                <li>Path bytes in frame = <strong>{pathBytesAvailable}</strong></li>
+                <li>Path data = <code>{pathBytes.length > 0 ? bytesToHex(pathBytes) : 'none'}</code></li>
+                <li>
+                  <pre className="meshcore-bit-art">
+                    {renderBitPointerArt(pathByte, [
+                      {
+                        msb: 7,
+                        lsb: 6,
+                        shortLabel: 'hsel',
+                        label: 'hash_size_selector (b7..b6)',
+                        value: bitSlice(pathByte, 7, 6),
+                      },
+                      {
+                        msb: 5,
+                        lsb: 0,
+                        shortLabel: 'hcnt',
+                        label: 'hash_count (b5..b0)',
+                        value: bitSlice(pathByte, 5, 0),
+                      },
+                    ], bitArtMode)}
+                  </pre>
+                </li>
+              </ul>
+            </li>
+            <li>
+              <span className="meshcore-ws-node">Payload</span>
+              <ul>
+                <li>Payload offset = <code>{payloadOffset}</code></li>
+                <li>Payload length = <strong>{payloadBytes.length}</strong> bytes</li>
+                <li>Payload bytes = <code>{payloadBytes.length > 0 ? bytesToHex(payloadBytes) : 'none'}</code></li>
+              </ul>
+            </li>
+          </ul>
+        </div>
+
+        <div className="meshcore-ws-panel">
+          <div className="meshcore-ws-panel-title">Hex Dump</div>
+          <div className="meshcore-ws-legend mb-2">
+            <span><i className="meshcore-ws-chip meshcore-ws-zone-header" />Header</span>
+            <span><i className="meshcore-ws-chip meshcore-ws-zone-path" />Path</span>
+            <span><i className="meshcore-ws-chip meshcore-ws-zone-payload" />Payload</span>
+          </div>
+          <div className="meshcore-ws-hexdump">
+            {hexdumpRows.map((row) => (
+              <div key={row.offset} className="meshcore-ws-hexdump-row">
+                <span className="meshcore-ws-offset">{row.offset.toString(16).padStart(4, '0')}</span>
+                <span className="meshcore-ws-bytes">
+                  {row.cells.map((cell, index) => (
+                    <span key={`${row.offset}-${index}`} className={`meshcore-ws-byte ${cell ? `meshcore-ws-zone-${cell.zone}` : 'meshcore-ws-byte-empty'}`}>
+                      {cell ? cell.byte.toString(16).padStart(2, '0') : '  '}
+                    </span>
+                  ))}
+                </span>
+                <span className="meshcore-ws-ascii">
+                  {row.cells.map((cell, index) => (
+                    <span key={`${row.offset}-ascii-${index}`} className={`meshcore-ws-char ${cell ? `meshcore-ws-zone-${cell.zone}` : 'meshcore-ws-byte-empty'}`}>
+                      {cell ? toAscii(cell.byte) : ' '}
+                    </span>
+                  ))}
+                </span>
+              </div>
+            ))}
+          </div>
+        </div>
+      </div>
+    </Card>
+  );
+};
+
+const PayloadDetails: React.FC<{ packet: MeshCorePacketRecord }> = ({ packet }) => {
+  const payload = packet.decodedPayload;
+  const payloadObj = asRecord(payload);
+
+  if (!payloadObj) {
+    return (
+      <Card body className="data-table-card">
+        <h6 className="mb-2">Payload</h6>
+        <div>Unable to decode payload; showing raw bytes only.</div>
+        <code>{bytesToHex(packet.raw)}</code>
+      </Card>
+    );
+  }
+
+  if (typeof payloadObj.flags === 'number' && payloadObj.data instanceof Uint8Array) {
+    return (
+      <Card body className="data-table-card">
+        <h6 className="mb-2">CONTROL Payload</h6>
+        <HeaderFact label="Flags" value={`0x${payloadObj.flags.toString(16)}`} />
+        <HeaderFact label="Data Length" value={payloadObj.data.length} />
+        <HeaderFact label="Data" value={<code>{bytesToHex(payloadObj.data)}</code>} />
+      </Card>
+    );
+  }
+
+  if (
+    typeof payloadObj.channelHash === 'string'
+    && payloadObj.cipherText instanceof Uint8Array
+    && payloadObj.cipherMAC instanceof Uint8Array
+  ) {
+    return (
+      <Card body className="data-table-card">
+        <h6 className="mb-2">GROUP Payload</h6>
+        <HeaderFact label="Channel Hash" value={payloadObj.channelHash} />
+        <HeaderFact label="Cipher Text Length" value={payloadObj.cipherText.length} />
+        <HeaderFact label="Cipher MAC" value={<code>{bytesToHex(payloadObj.cipherMAC)}</code>} />
+      </Card>
+    );
+  }
+
+  if (
+    typeof payloadObj.dstHash === 'string'
+    && typeof payloadObj.srcHash === 'string'
+    && payloadObj.cipherText instanceof Uint8Array
+    && payloadObj.cipherMAC instanceof Uint8Array
+  ) {
+    return (
+      <Card body className="data-table-card">
+        <h6 className="mb-2">Encrypted Payload</h6>
+        <HeaderFact label="Destination" value={payloadObj.dstHash} />
+        <HeaderFact label="Source" value={payloadObj.srcHash} />
+        <HeaderFact label="Cipher Text Length" value={payloadObj.cipherText.length} />
+        <HeaderFact label="Cipher MAC" value={<code>{bytesToHex(payloadObj.cipherMAC)}</code>} />
+      </Card>
+    );
+  }
+
+  if (payloadObj.data instanceof Uint8Array) {
+    return (
+      <Card body className="data-table-card">
+        <h6 className="mb-2">Raw Payload</h6>
+        <HeaderFact label="Data Length" value={payloadObj.data.length} />
+        <HeaderFact label="Data" value={<code>{bytesToHex(payloadObj.data)}</code>} />
+      </Card>
+    );
+  }
+
+  return (
+    <Card body className="data-table-card">
+      <h6 className="mb-2">Payload</h6>
+      <code>{JSON.stringify(payloadObj)}</code>
+    </Card>
+  );
+};
+
+interface MeshCorePacketDetailsPaneProps {
+  packet: MeshCorePacketRecord | null;
+  streamReady: boolean;
+}
+
+const MeshCorePacketDetailsPane: React.FC<MeshCorePacketDetailsPaneProps> = ({ packet, streamReady }) => {
+  if (!packet) {
+    return (
+      <Card body className="data-table-card h-100">
+        <h6>Select a packet</h6>
+        <div>Click any hash in the table to inspect MeshCore header and payload details.</div>
+        <div className="mt-2 text-secondary">Stream prepared: {streamReady ? 'yes' : 'no'}</div>
+      </Card>
+    );
+  }
+
+  return (
+    <Stack gap={2} className="h-100 meshcore-detail-stack">
+      <Card body className="data-table-card">
+        <Stack direction="horizontal" gap={2} className="mb-2">
+          <h6 className="mb-0">Packet Header</h6>
+          <Badge bg="primary">{payloadDisplayByValue[packet.payloadType] ?? packet.payloadType}</Badge>
+        </Stack>
+        <HeaderFact label="Time" value={packet.timestamp.toISOString()} />
+        <HeaderFact label="Hash" value={<code>{packet.hash}</code>} />
+        {packet.radioName && <HeaderFact label="Radio" value={packet.radioName} />}
+        <HeaderFact label="Version" value={packet.version} />
+        <HeaderFact label="Payload Type" value={`${payloadDisplayByValue[packet.payloadType] ?? 'Unknown'} (${packet.payloadType})`} />
+        <HeaderFact label="Route Type" value={routeDisplayByValue[packet.routeType] ?? packet.routeType} />
+        <HeaderFact label="Raw Length" value={`${packet.raw.length} bytes`} />
+        <HeaderFact label="Path" value={<code>{bytesToHex(packet.path)}</code>} />
+        <HeaderFact label="Raw Packet" value={<code>{bytesToHex(packet.raw)}</code>} />
+      </Card>
+      <WireDissector packet={packet} />
+      <PayloadDetails packet={packet} />
+      <Card body className="data-table-card">
+        <h6 className="mb-2">Stream Preparation</h6>
+        <div>MeshCore stream service is initialized and ready for topic subscriptions.</div>
+        <div className="text-secondary">Ready: {streamReady ? 'yes' : 'no'}</div>
+      </Card>
+    </Stack>
+  );
+};
+
+export default MeshCorePacketDetailsPane;

ui/src/pages/meshcore/MeshCorePacketFilters.tsx

@@ -0,0 +1,194 @@
+import React from 'react';
+
+import ExpandMoreIcon from '@mui/icons-material/ExpandMore';
+import {
+  Dropdown,
+  Form,
+  Stack,
+} from 'react-bootstrap';
+
+import {
+  payloadDisplayByValue,
+  PayloadTypeIcon,
+  routeDisplayByValue,
+} from './MeshCoreData';
+
+interface FilterDropdownProps {
+  label: string;
+  options: number[];
+  selectedValues: Set<number>;
+  getLabelForValue: (value: number) => string;
+  getIconForValue?: (value: number) => React.ReactElement;
+  onToggle: (value: number, isChecked: boolean) => void;
+  onSelectAll: () => void;
+}
+
+const FilterDropdown: React.FC<FilterDropdownProps> = ({
+  label,
+  options,
+  selectedValues,
+  getLabelForValue,
+  getIconForValue,
+  onToggle,
+  onSelectAll,
+}) => {
+  const isAllSelected = selectedValues.size === 0;
+  const displayLabel = isAllSelected ? `${label}: All` : `${label}: ${selectedValues.size} selected`;
+
+  return (
+    <Dropdown className="meshcore-filter-dropdown">
+      <Dropdown.Toggle variant="outline-light" size="sm" className="meshcore-dropdown-toggle">
+        {displayLabel}
+        <ExpandMoreIcon style={{ fontSize: '1rem', marginLeft: '0.25rem' }} />
+      </Dropdown.Toggle>
+
+      <Dropdown.Menu className="meshcore-dropdown-menu">
+        <Dropdown.Item as="label" className="meshcore-dropdown-item">
+          <Form.Check
+            type="checkbox"
+            label="All"
+            checked={isAllSelected}
+            onChange={() => onSelectAll()}
+            className="mb-0"
+            onClick={(e) => e.stopPropagation()}
+          />
+        </Dropdown.Item>
+        <Dropdown.Divider />
+        {options.map((option) => (
+          <Dropdown.Item key={option} as="label" className="meshcore-dropdown-item">
+            <Form.Check
+              type="checkbox"
+              label={(
+                <span>
+                  {getIconForValue && <span style={{ marginRight: '0.5rem' }}>{getIconForValue(option)}</span>}
+                  {getLabelForValue(option)}
+                </span>
+              )}
+              checked={selectedValues.has(option)}
+              onChange={(e) => onToggle(option, e.target.checked)}
+              className="mb-0"
+              onClick={(e) => e.stopPropagation()}
+            />
+          </Dropdown.Item>
+        ))}
+      </Dropdown.Menu>
+    </Dropdown>
+  );
+};
+
+interface StringFilterDropdownProps {
+  label: string;
+  options: string[];
+  selectedValues: Set<string>;
+  onToggle: (value: string, isChecked: boolean) => void;
+  onSelectAll: () => void;
+}
+
+const StringFilterDropdown: React.FC<StringFilterDropdownProps> = ({
+  label,
+  options,
+  selectedValues,
+  onToggle,
+  onSelectAll,
+}) => {
+  const isAllSelected = selectedValues.size === 0;
+  const displayLabel = isAllSelected ? `${label}: All` : `${label}: ${selectedValues.size} selected`;
+
+  return (
+    <Dropdown className="meshcore-filter-dropdown">
+      <Dropdown.Toggle variant="outline-light" size="sm" className="meshcore-dropdown-toggle">
+        {displayLabel}
+        <ExpandMoreIcon style={{ fontSize: '1rem', marginLeft: '0.25rem' }} />
+      </Dropdown.Toggle>
+
+      <Dropdown.Menu className="meshcore-dropdown-menu">
+        <Dropdown.Item as="label" className="meshcore-dropdown-item">
+          <Form.Check
+            type="checkbox"
+            label="All"
+            checked={isAllSelected}
+            onChange={() => onSelectAll()}
+            className="mb-0"
+            onClick={(e) => e.stopPropagation()}
+          />
+        </Dropdown.Item>
+        <Dropdown.Divider />
+        {options.map((option) => (
+          <Dropdown.Item key={option} as="label" className="meshcore-dropdown-item">
+            <Form.Check
+              type="checkbox"
+              label={option}
+              checked={selectedValues.has(option)}
+              onChange={(e) => onToggle(option, e.target.checked)}
+              className="mb-0"
+              onClick={(e) => e.stopPropagation()}
+            />
+          </Dropdown.Item>
+        ))}
+      </Dropdown.Menu>
+    </Dropdown>
+  );
+};
+
+interface MeshCorePacketFiltersProps {
+  uniquePayloadTypes: number[];
+  uniqueRadioNames: string[];
+  uniqueRouteTypes: number[];
+  filterPayloadTypes: Set<number>;
+  filterRadios: Set<string>;
+  filterRouteTypes: Set<number>;
+  onPayloadToggle: (value: number, isChecked: boolean) => void;
+  onPayloadSelectAll: () => void;
+  onRadioToggle: (value: string, isChecked: boolean) => void;
+  onRadioSelectAll: () => void;
+  onRouteToggle: (value: number, isChecked: boolean) => void;
+  onRouteSelectAll: () => void;
+}
+
+const MeshCorePacketFilters: React.FC<MeshCorePacketFiltersProps> = ({
+  uniquePayloadTypes,
+  uniqueRadioNames,
+  uniqueRouteTypes,
+  filterPayloadTypes,
+  filterRadios,
+  filterRouteTypes,
+  onPayloadToggle,
+  onPayloadSelectAll,
+  onRadioToggle,
+  onRadioSelectAll,
+  onRouteToggle,
+  onRouteSelectAll,
+}) => {
+  return (
+    <div className="meshcore-filters p-2 border-bottom border-secondary-subtle">
+      <Stack direction="horizontal" gap={2}>
+        <FilterDropdown
+          label="Payload Type"
+          options={uniquePayloadTypes}
+          selectedValues={filterPayloadTypes}
+          getLabelForValue={(value) => payloadDisplayByValue[value] ?? `0x${value.toString(16)}`}
+          getIconForValue={(value) => <PayloadTypeIcon payloadType={value} />}
+          onToggle={onPayloadToggle}
+          onSelectAll={onPayloadSelectAll}
+        />
+        <StringFilterDropdown
+          label="Radio"
+          options={uniqueRadioNames}
+          selectedValues={filterRadios}
+          onToggle={onRadioToggle}
+          onSelectAll={onRadioSelectAll}
+        />
+        <FilterDropdown
+          label="Route Type"
+          options={uniqueRouteTypes}
+          selectedValues={filterRouteTypes}
+          getLabelForValue={(value) => routeDisplayByValue[value] ?? `0x${value.toString(16)}`}
+          onToggle={onRouteToggle}
+          onSelectAll={onRouteSelectAll}
+        />
+      </Stack>
+    </div>
+  );
+};
+
+export default MeshCorePacketFilters;

ui/src/pages/meshcore/MeshCorePacketRows.tsx

@@ -0,0 +1,172 @@
+import React from 'react';
+import { bytesToHex } from '@noble/hashes/utils.js';
+
+import ChevronRightIcon from '@mui/icons-material/ChevronRight';
+import ExpandMoreIcon from '@mui/icons-material/ExpandMore';
+
+import { PayloadType } from '../../protocols/meshcore.types';
+import type { MeshCorePacketRecord } from './MeshCoreContext';
+import {
+  payloadDisplayByValue,
+  PayloadTypeIcon,
+} from './MeshCoreData';
+
+const getPayloadTypeColor = (payloadType: number): string => {
+  switch (payloadType) {
+    case PayloadType.TEXT:
+    case PayloadType.GROUP_TEXT:
+    case PayloadType.TRACE:
+    case PayloadType.PATH:
+      return 'meshcore-packet-green';
+    case PayloadType.ADVERT:
+      return 'meshcore-packet-purple';
+    case PayloadType.REQUEST:
+    case PayloadType.RESPONSE:
+    case PayloadType.CONTROL:
+      return 'meshcore-packet-amber';
+    default:
+      return '';
+  }
+};
+
+const getPathInfo = (packet: MeshCorePacketRecord): { prefixes: string; hopCount: number } => {
+  if (packet.raw.length < 2) {
+    return { prefixes: 'none', hopCount: 0 };
+  }
+
+  const pathField = packet.raw[1];
+  const hashSize = (pathField >> 6) + 1;
+  const hashCount = pathField & 0x3f;
+
+  if (hashCount === 0 || hashSize === 4) {
+    return { prefixes: 'none', hopCount: 0 };
+  }
+
+  const pathByteLength = hashCount * hashSize;
+  const availablePathBytes = Math.min(pathByteLength, Math.max(packet.raw.length - 2, 0));
+  const pathBytes = packet.raw.slice(2, 2 + availablePathBytes);
+
+  if (pathBytes.length === 0) {
+    return { prefixes: 'none', hopCount: 0 };
+  }
+
+  const prefixes: string[] = [];
+  for (let offset = 0; offset + hashSize <= pathBytes.length; offset += hashSize) {
+    prefixes.push(bytesToHex(pathBytes.slice(offset, offset + hashSize)));
+  }
+
+  if (prefixes.length === 0) {
+    return { prefixes: 'none', hopCount: 0 };
+  }
+
+  return {
+    prefixes: prefixes.join(' → '),
+    hopCount: prefixes.length,
+  };
+};
+
+export interface MeshCorePacketGroup {
+  hash: string;
+  packets: MeshCorePacketRecord[];
+  mostRecent: MeshCorePacketRecord;
+}
+
+interface MeshCorePacketRowsProps {
+  groupedPackets: MeshCorePacketGroup[];
+  expandedHashes: Set<string>;
+  onToggleExpanded: (hash: string) => void;
+  onSelect: (packet: MeshCorePacketRecord) => void;
+  selectedHash: string | null;
+}
+
+const MeshCorePacketRows: React.FC<MeshCorePacketRowsProps> = ({
+  groupedPackets,
+  expandedHashes,
+  onToggleExpanded,
+  onSelect,
+  selectedHash,
+}) => {
+  return (
+    <>
+      {groupedPackets.map((group) => {
+        const isExpanded = expandedHashes.has(group.hash);
+        const hasDuplicates = group.packets.length > 1;
+        const [packet, ...duplicatePackets] = group.packets;
+        const expandedPackets = [packet, ...duplicatePackets].sort((a, b) => {
+          const pathA = getPathInfo(a).hopCount;
+          const pathB = getPathInfo(b).hopCount;
+          if (pathA !== pathB) {
+            return pathA - pathB;
+          }
+          return b.timestamp.getTime() - a.timestamp.getTime();
+        });
+
+        return (
+          <React.Fragment key={group.hash}>
+            <tr
+              data-nav-item="true"
+              className={`${getPayloadTypeColor(packet.payloadType)} ${selectedHash === packet.hash ? 'is-selected' : ''}`}
+              onClick={() => onSelect(packet)}
+            >
+              <td>
+                {hasDuplicates && (
+                  <button
+                    type="button"
+                    className="meshcore-expand-button"
+                    onClick={(e) => {
+                      e.stopPropagation();
+                      onToggleExpanded(group.hash);
+                    }}
+                    aria-label={isExpanded ? 'Collapse duplicates' : 'Expand duplicates'}
+                  >
+                    {isExpanded ? <ExpandMoreIcon style={{ fontSize: '1rem' }} /> : <ChevronRightIcon style={{ fontSize: '1rem' }} />}
+                  </button>
+                )}
+              </td>
+              <td>
+                {packet.timestamp.toLocaleTimeString()}
+                {hasDuplicates && (
+                  <span className="meshcore-duplicate-badge" title={`${group.packets.length} instances`}>
+                    {' '}×{group.packets.length}
+                  </span>
+                )}
+              </td>
+              <td>
+                <button type="button" className="meshcore-hash-button" onClick={() => onSelect(packet)}>
+                  {packet.hash}
+                </button>
+              </td>
+              <td className="meshcore-payload-type-cell" title={payloadDisplayByValue[packet.payloadType] ?? `0x${packet.payloadType.toString(16)}`}>
+                <PayloadTypeIcon payloadType={packet.payloadType} />
+              </td>
+              <td>{packet.payloadSummary}</td>
+            </tr>
+            {isExpanded && expandedPackets.map((duplicatePacket, index) => (
+              <tr
+                key={`${group.hash}-${index}`}
+                className={`${getPayloadTypeColor(duplicatePacket.payloadType)} ${selectedHash === duplicatePacket.hash ? 'is-selected' : ''}`}
+                onClick={() => onSelect(duplicatePacket)}
+              >
+                <td></td>
+                <td>{duplicatePacket.timestamp.toLocaleTimeString()}</td>
+                <td>
+                  <button type="button" className="meshcore-hash-button" onClick={() => onSelect(duplicatePacket)}>
+                    {duplicatePacket.hash}
+                  </button>
+                </td>
+                <td className="meshcore-payload-type-cell" title={payloadDisplayByValue[duplicatePacket.payloadType] ?? `0x${duplicatePacket.payloadType.toString(16)}`}>
+                  <PayloadTypeIcon payloadType={duplicatePacket.payloadType} />
+                </td>
+                <td>
+                  {getPathInfo(duplicatePacket).prefixes}
+                </td>
+              </tr>
+            ))}
+          </React.Fragment>
+        );
+      })}
+    </>
+  );
+};
+
+export default MeshCorePacketRows;

ui/src/pages/meshcore/MeshCorePacketTable.tsx

@@ -0,0 +1,243 @@
+import React, { useEffect, useMemo, useState } from 'react';
+import { useSearchParams } from 'react-router';
+
+import {
+  Card,
+  Table,
+} from 'react-bootstrap';
+import StreamStatus from '../../components/StreamStatus';
+import KeyboardShortcutsModal from '../../components/KeyboardShortcutsModal';
+import { useKeyboardListNavigation } from '../../hooks/useKeyboardListNavigation';
+import { useRadiosByProtocol } from '../../contexts/RadiosContext';
+import type { MeshCorePacketRecord } from './MeshCoreContext';
+import {
+  payloadUrlByValue,
+  payloadValueByUrl,
+  routeUrlByValue,
+  routeValueByUrl,
+} from './MeshCoreData';
+import MeshCorePacketFilters from './MeshCorePacketFilters';
+import MeshCorePacketRows, { type MeshCorePacketGroup } from './MeshCorePacketRows';
+
+interface MeshCorePacketTableProps {
+  packets: MeshCorePacketRecord[];
+  selectedHash: string | null;
+  onSelect: (packet: MeshCorePacketRecord) => void;
+  onClearSelection: () => void;
+  streamReady: boolean;
+}
+
+const MeshCorePacketTable: React.FC<MeshCorePacketTableProps> = ({ packets, selectedHash, onSelect, onClearSelection, streamReady }) => {
+  const [searchParams, setSearchParams] = useSearchParams();
+  const radios = useRadiosByProtocol('meshcore');
+  const scrollRef = React.useRef<HTMLDivElement>(null);
+
+  const [filterPayloadTypes, setFilterPayloadTypes] = useState<Set<number>>(() => {
+    const payloads = searchParams.get('payloads');
+    if (!payloads) return new Set();
+    return new Set(payloads.split(',').map((urlName) => payloadValueByUrl[urlName]).filter((v) => v !== undefined));
+  });
+
+  const [filterRouteTypes, setFilterRouteTypes] = useState<Set<number>>(() => {
+    const routes = searchParams.get('routes');
+    if (!routes) return new Set();
+    return new Set(routes.split(',').map((urlName) => routeValueByUrl[urlName]).filter((v) => v !== undefined));
+  });
+
+  const [filterRadios, setFilterRadios] = useState<Set<string>>(() => {
+    const radiosParam = searchParams.get('radios');
+    if (!radiosParam) return new Set();
+    return new Set(radiosParam.split(',').map(decodeURIComponent));
+  });
+
+  const [expandedHashes, setExpandedHashes] = useState<Set<string>>(new Set());
+
+  useEffect(() => {
+    const newParams = new URLSearchParams(searchParams);
+
+    if (filterPayloadTypes.size > 0) {
+      newParams.set('payloads', Array.from(filterPayloadTypes).map((v) => payloadUrlByValue[v]).join(','));
+    } else {
+      newParams.delete('payloads');
+    }
+
+    if (filterRouteTypes.size > 0) {
+      newParams.set('routes', Array.from(filterRouteTypes).map((v) => routeUrlByValue[v]).join(','));
+    } else {
+      newParams.delete('routes');
+    }
+
+    if (filterRadios.size > 0) {
+      newParams.set('radios', Array.from(filterRadios).map(encodeURIComponent).join(','));
+    } else {
+      newParams.delete('radios');
+    }
+
+    setSearchParams(newParams, { replace: true });
+  }, [filterPayloadTypes, filterRouteTypes, filterRadios, searchParams, setSearchParams]);
+
+  const uniquePayloadTypes = useMemo(() => {
+    const types = new Set(packets.map((packet) => packet.payloadType));
+    return Array.from(types).sort((a, b) => a - b);
+  }, [packets]);
+
+  const uniqueRouteTypes = useMemo(() => {
+    const types = new Set(packets.map((packet) => packet.routeType));
+    return Array.from(types).sort((a, b) => a - b);
+  }, [packets]);
+
+  const uniqueRadioNames = useMemo(() => {
+    const namesFromPackets = new Set(packets.map((packet) => packet.radioName).filter((name): name is string => !!name));
+    const namesFromAPI = new Set(radios.map((radio) => radio.name));
+    const allNames = new Set([...namesFromPackets, ...namesFromAPI]);
+    return Array.from(allNames).sort();
+  }, [packets, radios]);
+
+  const groupedPackets = useMemo((): MeshCorePacketGroup[] => {
+    const groups = new Map<string, MeshCorePacketRecord[]>();
+
+    packets.forEach((packet) => {
+      if (filterPayloadTypes.size > 0 && !filterPayloadTypes.has(packet.payloadType)) return;
+      if (filterRouteTypes.size > 0 && !filterRouteTypes.has(packet.routeType)) return;
+      if (filterRadios.size > 0 && packet.radioName && !filterRadios.has(packet.radioName)) return;
+
+      const existing = groups.get(packet.hash);
+      if (existing) {
+        existing.push(packet);
+      } else {
+        groups.set(packet.hash, [packet]);
+      }
+    });
+
+    return Array.from(groups.entries())
+      .map(([hash, grouped]) => ({
+        hash,
+        packets: grouped.sort((a, b) => b.timestamp.getTime() - a.timestamp.getTime()),
+        mostRecent: grouped.reduce((latest, packet) => (
+          packet.timestamp > latest.timestamp ? packet : latest
+        )),
+      }))
+      .sort((a, b) => b.mostRecent.timestamp.getTime() - a.mostRecent.timestamp.getTime());
+  }, [packets, filterPayloadTypes, filterRouteTypes, filterRadios]);
+
+  const handlePayloadTypeToggle = (value: number, isChecked: boolean) => {
+    const newSet = new Set(filterPayloadTypes);
+    if (isChecked) {
+      newSet.add(value);
+    } else {
+      newSet.delete(value);
+    }
+    setFilterPayloadTypes(newSet);
+  };
+
+  const handleRouteTypeToggle = (value: number, isChecked: boolean) => {
+    const newSet = new Set(filterRouteTypes);
+    if (isChecked) {
+      newSet.add(value);
+    } else {
+      newSet.delete(value);
+    }
+    setFilterRouteTypes(newSet);
+  };
+
+  const handleRadioToggle = (value: string, isChecked: boolean) => {
+    const newSet = new Set(filterRadios);
+    if (isChecked) {
+      newSet.add(value);
+    } else {
+      newSet.delete(value);
+    }
+    setFilterRadios(newSet);
+  };
+
+  const toggleExpanded = (hash: string) => {
+    const newExpanded = new Set(expandedHashes);
+    if (newExpanded.has(hash)) {
+      newExpanded.delete(hash);
+    } else {
+      newExpanded.add(hash);
+    }
+    setExpandedHashes(newExpanded);
+  };
+
+  const navigablePackets = useMemo(() => groupedPackets.map((group) => group.mostRecent), [groupedPackets]);
+  const selectedIndex = useMemo(() => {
+    if (!selectedHash) {
+      return null;
+    }
+    const index = navigablePackets.findIndex((packet) => packet.hash === selectedHash);
+    return index >= 0 ? index : null;
+  }, [navigablePackets, selectedHash]);
+
+  const { showShortcuts, setShowShortcuts, shortcuts } = useKeyboardListNavigation({
+    itemCount: navigablePackets.length,
+    selectedIndex,
+    onSelectIndex: (index) => {
+      if (index === null) {
+        onClearSelection();
+        return;
+      }
+      const packet = navigablePackets[index];
+      if (packet) {
+        onSelect(packet);
+      }
+    },
+    scrollContainerRef: scrollRef,
+  });
+
+  return (
+    <Card className="data-table-card h-100 d-flex flex-column">
+      <Card.Header className="data-table-header d-flex justify-content-between align-items-center">
+        <span>MeshCore Packets</span>
+        <div className="d-flex align-items-center gap-2">
+          <StreamStatus ready={streamReady} />
+        </div>
+      </Card.Header>
+      <Card.Body className="data-table-body p-0 d-flex flex-column">
+        <MeshCorePacketFilters
+          uniquePayloadTypes={uniquePayloadTypes}
+          uniqueRadioNames={uniqueRadioNames}
+          uniqueRouteTypes={uniqueRouteTypes}
+          filterPayloadTypes={filterPayloadTypes}
+          filterRadios={filterRadios}
+          filterRouteTypes={filterRouteTypes}
+          onPayloadToggle={handlePayloadTypeToggle}
+          onPayloadSelectAll={() => setFilterPayloadTypes(new Set())}
+          onRadioToggle={handleRadioToggle}
+          onRadioSelectAll={() => setFilterRadios(new Set())}
+          onRouteToggle={handleRouteTypeToggle}
+          onRouteSelectAll={() => setFilterRouteTypes(new Set())}
+        />
+        <div className="data-table-scroll" ref={scrollRef}>
+          <Table hover responsive className="data-table mb-0" size="sm">
+            <thead>
+              <tr>
+                <th style={{ width: '30px' }}></th>
+                <th style={{ width: '100px' }}>Time</th>
+                <th style={{ width: '80px' }}>Hash</th>
+                <th style={{ width: '50px' }}>Type</th>
+                <th>Info</th>
+              </tr>
+            </thead>
+            <tbody>
+              <MeshCorePacketRows
+                groupedPackets={groupedPackets}
+                expandedHashes={expandedHashes}
+                onToggleExpanded={toggleExpanded}
+                onSelect={onSelect}
+                selectedHash={selectedHash}
+              />
+            </tbody>
+          </Table>
+        </div>
+      </Card.Body>
+      <KeyboardShortcutsModal
+        show={showShortcuts}
+        onHide={() => setShowShortcuts(false)}
+        shortcuts={shortcuts}
+      />
+    </Card>
+  );
+};
+
+export default MeshCorePacketTable;