Playing around with ctcss squelch block analog.ctcss_squelch_ff(self.audio_rate, 131.8, 0.10, 0, 0, False)
It works, but sometimes short cracking noise when there is no carrier with 131.8
The default 0.01 gave continue noise, but 0.11 kills audio even if the carrier is there. Maybe the latter 3 parameters should be adjusted? Wiki block docu is limited.
https://amphenolprocom.com/products/filters/353-mpx-70-6
ow, up to 25 Watt, nice find!
Will fit my #sx1255 pi hat UHF experiments
leo@rpi0:~ $ aplay -D bluealsa cq.wav
[4474] D: bluealsa-pcm.c:1538: Getting BlueALSA PCM: PLAYBACK B0:38:E2:3E:8A:14 a2dp
Connectig a #bluetooth headphone to #pizero all good fun, but aplay -l or arecord -l would never show the new connected device.
However it is there and it works.
leo@caribou:~/Projects/libsx1255 $ ./example
Resetting SX1255...
SX1255 chip version: V0H
Configuring SX1255...
Sample rate setup error
TX PLL: locked
RX PLL: locked
SX1255 configuration complete
Leo Bistmans