# 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.



## 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/





## Setup
```
sudo apt install portaudio19-dev
pip3 install crcengine
```


## 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

Send a simple broadcast
```
BC:<DATA>    
```


## Other stuff

Create audio sinkhole
```
sudo modprobe snd-aloop index=1,2 enable=1,1 pcm_substreams=1,1 id=CHAT1,CHAT2 
```