My Shari PiHat-4U is working now, except for the decoding of the “A” DTMF button on my Yaesu FT-5D portable transceiver. The transmitted audio worked when testing it in the 55553 Parrot hub. What are some popular and active AllStarLink hubs and nodes?
First thing to check is at the SimpleUSB tune menu, try de-emphasis on and off (and never “boost on”) then look in the Asterisk CLI to see of DTMF improved.
Next I would experiment with the RX Volume setting in the 818 programmer. I believe the newer recommended setting is 6 versus the full 8. You could also try pre-deemphasis on/off there as well
I did get the “A” DTMF key to decode using the Shari PiHat-4U and the HamVOIP software. The solution was to do the configuration in SA818-prog: Volume value: 6, PreEmphasis: No, High Pass: No, Low Pass: No. Then all tones 0 - 9, *, #, A, B, C, D decoded, with item 11, the CLI testing.