Using third-party modems

Hundreds of open source software, ranging from FreeDV to FlDigi to WSJT-X, are available on Raspberry Pi.

To run them on zBitx:

  1. Set zBitx mode to DIGI
  2. Enable Hamlib in the third-party software’s setting.
  3. From the third party software, choose Hamlib NET rigctl as the radio.
  4. Set the Network server to 127.0.0.1 and port 4532 (standard for NET rigctrl)
  5. Set the PTT Method to CAT
  6. Set the Mode (if prompted) to USB
  7. Choose plughw:CARD=Loopback_DEV=1 as the Input/Record Audio. Alternatively, you can also choose Loopback: PCM(hw:1,1) 
  8. Choose plughw:CARD=Loopback_DEV=0 as the Output/Playback Audio. Alternatively, could also choose Loopback: PCM (hw:2,0)