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A free, open-source, multi-platform application for sending files and messages, using the codec2 HF modems
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README.md

FreeDV-Socket-TNC

My first attempt to learn more about FreeDV and how to create a TNC which gets data from a TCP/IP Socket.

Setup

sudo apt install portaudio19-dev

Run

./__main__.py --rx-sound-device 2 --tx-sound-device 2 --port 3000

Parameters

--rx-sound-device <1> --tx-sound-device <1> --port <3000>

To list all audio devices run

./__main__.py --list-audio-devices

Socket Commands

BC: Send a simple broadcast

Other stuff

Create audio sinkhole

sudo modprobe snd-aloop index=1,2 enable=1,1 pcm_substreams=1,1 id=CHAT1,CHAT2

Credits

David Rowe and the FreeDV team for developing the modem and libraries FreeDV Codec 2 : https://github.com/drowe67/codec2

This software has been heavily inspired by https://github.com/xssfox/freedv-tnc/