DR-891 on DigiPi system

1

I’m struggling to get this DR-891 to work with DigiPi. I have tested on another Raspberry Pi running Bullseye with JS8Call and I am using CAT control with the USB audio and it does work fine, so I know the radio , baud rates etc are all correct and functioning as expected.

The issue I am having with DigiPi is that as soon as I turn on the FT-891 when connected to the DR-891 connected to the DigiP,i, the transceiver immediately begins to flutter between transmit and receive, quite rapidly.
I have tried completely killing rigctld and the transmit / receive flutter continues to occur .
If I remove the black audio cable from the DR-891, the flutter stops .
I am not sure how to proceed at this point but it is clearly an issue on the audio side of things.

2

Some progress, I have found that if I reduce the output volume (using alsamixer) the flutter stops, however I can’t seem to get the signal to drive the transmitter with the output volume set to 25.

3

Dan,
Send payload to the left channel if you have option of PTT by CAT like in case of JS8Call. Right channel triggers PTT by VOX which is why you see the flickering.

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