Ryan Malloy 1b105f5632 Add firmware internals section documenting RE work
New reference pages covering the V2.4a reverse engineering:
- Overview with architecture diagram and memory layout
- Command dispatch: XOR pattern, two dispatchers, compound commands
- Memory map: RAM variables, EEPROM layout, SFR definitions
- I2C & synthesizer: RDA1846S communication, frequency programming
- Source files: links to annotated assembly, C port, Python tools

These document the 19,053-line annotated assembly and 12,020-line
readable C port produced by Phases 1-3 of the RE project.
2026-01-29 19:15:49 -07:00

RS-UV3A Documentation

Documentation site for the HobbyPCB RS-UV3A VHF/UHF Tri-Band FM Transceiver.

Built with Astro and Starlight.

About the RS-UV3A

The RS-UV3A is a compact FM transceiver board designed by Jim Veatch (WA2EUJ) at HobbyPCB. It covers:

  • 2m Band: 136174 MHz
  • 1.25m Band: 200260 MHz
  • 70cm Band: 400520 MHz

Features include on-board USB-serial, wide-range DC-DC converter (3.5V16V), and Arduino/Raspberry Pi compatibility.

Documentation Structure

  • Getting Started — Quick start, connections, serial setup
  • Guides — Voice operation, packet/APRS, beacons, repeaters
  • Reference — Specifications, all 66 serial commands, connector pinouts
  • Accessories — RS-UVPA 5W power amplifier

Development

# Install dependencies
npm install

# Start dev server at localhost:4321
npm run dev

# Build for production
npm run build

# Preview production build
npm run preview

Source Material

Documentation is based on official HobbyPCB manuals:

  • RS-UV3A Rev A Manual
  • RS-UV3 Command Reference (Firmware 2.4A)
  • RS-UV3 Rev C Manual
  • RS-UVPA Manual
Description
Documentation for the HobbyPCB RS-UV3A VHF/UHF Tri-Band FM Transceiver
Readme 2.6 MiB
Languages
JavaScript 29.6%
CSS 25.4%
MDX 24.6%
Makefile 11.7%
Dockerfile 6.3%
Other 2.4%