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Using the DRAWS hat, I have had good success with AX25 packet using a Kenwood V71, for example, running XASTIR, or sending and receiving winlink messages using PAT.
However, when I substitute my FT-817 for the V71, using the same cables for data and rig control, the DRAWS DIN-6 connection appears to "short" the audio from the FT-817 to ground. Disconnected from DRAWS I see the FT-817 signal strength meter indicate the presence of a received signal and the audio is heard on the radio's loudspeaker. I am also using an oscilloscope to monitor the signal on pin 5 (1200 baud) from the FT-817.
When connected to the DRAWS DIN-6, left or right, the audio is not heard in the loudspeaker (though the radio's signal strength meter still indicates the presence of a received signal), and the signal shown on the oscilloscope goes to zero.
Thinking that this might be a loading issue with the FT-817, I changed the in-line resistor values from 10k to 40k as confirmed via alsa-show:
===== ALSA Controls for Radio Receive =====
ADC Level L:[0.00dB] R:[0.00dB]
IN1 L:[Off] R:[Off]
IN2 L:[40 kOhm] R:[40 kOhm
I have the FT-817 mode in PKT and PKT RATE set to 1200baud.
I would be most grateful for any suggestions.
On Sun, Dec 23, 2018 at 10:47 AM Basil Gunn <basil@...> wrote: