This is a library to interact with the Dorji DRA818X radio module.
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René Schaar faa742e2c5
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Dorji DRA818X Library

This is a library for the Dorji DRA818X radio module.

Source of the picture:, 21.11.2021.


Please be aware of the fact that transmitting with this radio module does require a amateur radio licence. It is legal tough to receive radio signals if you do not own such license.


The library does provide a simple and secure way (error handling) of interacting with the Dorji DRA818X. All commands which are available for the module are implemented as methods:

  • Handshake
  • Frequency Scan
  • Update group settings
  • Volume
  • Filter

For the group setting command and the filter command you will first need to set the given parameters with their corresponding setter methods. E.g. setFrequency(), setRxFrequency(), setTxCTCSS(), setSquelch(), setEmphasisFilter() and so on.

The library also provides error handling for incorrect wirering, wrong parameters, etc.


To install the library choose one of the following options

  1. Install the library by using the Library Manager
  2. By importing the .zip library using either the master or one of the releases ZIP files.
  3. Via PlatformIO by pasting the following code block into your platformio.ini file
lib_deps =


To test not only the functionality of the library but also your radio module, you can use the ModuleTester.ino.


If you want to contribute to this library then either create an issue with a feature request / bug report or create a pull requst with your changes.