Thank you very much for your message including Raspberry GPIO info.
I corrected piHPSDR GPIO configuration as attached.
The push-to-talk pin 13 starts to work. However it is very sensitive and unstable in a manner that when I connect a wire to pin 13, and the other side of this wire is open, not grounded, but piHPSDR goes to TX. This doesn't always happen, but frequently.
In addition, when pin 13 is grounded, piHPSDR goes to TX. But, I can use MOX, then RX with pin13 grounded.
Is there a need to pull-up this pin 13?
2020年12月9日水曜日 20:56:23 UTC+9 pa3gsb: