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ArduTrx is a 2-meter-band ham radio transceiver which uses an Arduino as precessor board. I made a Arduino shield with the Dorji DRA818V transceiver module (http://www.dorji.com/docs/data/DRA818V.pdf). Together with an Arduino board and a SainSmart LCD Keypad Shield (https://www.sainsmart.com/products/lcd-keypad-shield-for-arduino-duemilanove-uno-mega2560-mega1280 ) you can build a complete ham radio transceiver and start communicating. This project does not only give some basic functions to communicate with the DRA818V, it moreover has all the fuctions for a completly usable transceiver.

ArduTrx

 

Features

  • Frequency Range: 134 MHz - 174 Mhz (maybe limited to ham radio bands by software)
  • frequency selection with encoder
  • 1750 Hz tone for repeater operation
  • split rx and tx frequency for repeater operation
  • CTCSS via menu
  • Squelch and volume can be set via display keys
  • Transmit power swtchable from 0.5W to 1W
  • frequency scan
  • all settings are stored in eeprom and recalled after reset

frequency scan on ArduTrx

 

Planned features

  • support for the UHF version Dorji DRA818U (400 - 470 MHz)
  • DTMF signaling

 

Compatibility

The ArduTrx shield should be compatible with all 5V Arduinos. Compatibility was explicitly tested with Arduino Uno and Arduino Leonardo.

A version also compatible with 3.3V Arduinos is planed.

ArduTrx with Arduino Leonardo

 

Source code

You can find the source code on github: https://github.com/generationmake/ArduTrx

 

Schematics

Here is a link to the schematics: http://blog.generationmake.de/file_download/1/dra-shield.pdf