#sx1255 pi hat new action with zmq_proxy and soapysdrserver

Almost works!

Another pi can find it with soapysdrutil --find
But #gqrx too heavy for a pi zero 2 hardware

#hamradio #70cm #uhf #linht

https://github.com/rxt1077/sx1255-presentation/blob/master/slides.pdf

#sx1255 #hamradio #70cm #sdr

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://wiki.gnuradio.org/index.php?title=CTCSS_Squelch

#gnuradio #sx1255 #uhf #sdr #hamradio

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.

#linux #debian a complete waste of time :p

#hamradio #sx1255 #m17