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gqrx-sdr / gqrx

Software defined radio receiver powered by GNU Radio and Qt.
http://gqrx.dk
GNU General Public License v3.0
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Red Pitaya ppm issue #1381

Open DrSDR opened 1 day ago

DrSDR commented 1 day ago

using the ethernet red pitaya 125-14, it works fine for RX, however when i change the ppm field , i do not see the signal shift in freq. it seems the ppm field has no effect on the red pitaya redpitaya=192.168.1.100:1001 using gqrx software. thanks

argilo commented 1 day ago

This appears to be a bug in gr-osmosdr. The redpitaya_source_c::set_freq_corr method updates an instance variable, but does not immediately retune the radio:

https://gitea.osmocom.org/sdr/gr-osmosdr/src/branch/master/lib/redpitaya/redpitaya_source_c.cc#L227-L232

I expect that an update to the PPM value will take effect the next time the frequency is adjusted.

DrSDR commented 1 day ago

ok thank you, i will give that a try. you are talking about the hardware center freq or the tuner offset freq ?

argilo commented 1 day ago

Hardware center frequency.

DrSDR commented 1 day ago

ok thanks, it worked, enter in ppm value, then change hardware freq, i saw the ppm correction get applied. red pitaya is now tuned up. thanks for the help.