GQRX output not decoding on rpi
icissel opened this issue · 3 comments
I am trying to pipe sdr stream from gqrx to multimon-ng with the following:
nc -l -u localhost 7355 | sox -t raw -esigned-integer -b 16 -r 48000 - -esigned-integer -b 16 -r 22050 -t raw - | multimon-ng -t raw -a POCSAG512 -a POCSAG1200 -a POCSAG2400 -a FLEX -f alpha -
the gqrx settings are set as shown below
running that script shows:
multimon-ng 1.1.9 (C) 1996/1997 by Tom Sailer HB9JNX/AE4WA (C) 2012-2020 by Elias Oenal Available demodulators: POCSAG512 POCSAG1200 POCSAG2400 FLEX EAS UFSK1200 CLIPFSK FMSFSK AFSK1200 AFSK2400 AFSK2400_2 AFSK2400_3 HAPN4800 FSK9600 DTMF ZVEI1 ZVEI2 ZVEI3 DZVEI PZVEI EEA EIA CCIR MORSE_CW DUMPCSV X10 SCOPE Enabled demodulators: POCSAG512 POCSAG1200 POCSAG2400 FLEX
I get plenty of output when i run nc -l -u localhost 7355. Also, decoding works as espected when I pipe rtl_fm to multimon with the same sox parameters as above
I don't have any problem decoding gqrx output on a Raspberry Pi. Could it be because you've checked the "stereo" checkbox? SoX is probably expecting mono data.
thanks for mentioning that...I clicked stereo on during my last troubleshoot prior to posting but even in mono it still doesnt decode
interestingly, when i run the multimon-ng script while connected to the pi via vnc viewer with a terminal shell open i get no output. However, when i open and tune gqrx via vnc viewer and then run the multimon script in an ssh shell it works fine.