Are you certain that your PTT button is working? You should hear relays click when you press it. If the PTT button is working, then a lack of signals out of the audio hat implies that the hat is not working for some reason. I'm assuming that the I2C connection to the audio hat did not have a fault on the BIT screen at boot?
On Wednesday, April 16th, 2025 at 9:15 PM, Tim via groups.io <w4yn@...> wrote:
Put scope on the IQ out pins and I don't detect and signals when in TX IQ calibrate
Tim
