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AlexandreRouma / SDRPlusPlus

Cross-Platform SDR Software
GNU General Public License v3.0
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Frequency range not locked to source limitations #1193

Open helioshk opened 10 months ago

helioshk commented 10 months ago

When connecting to a spyserver, the signal frequencies are 6250 Hz too low, in the FFT as well as the audio, compared to other spyserver client (sdr#) and calibrated reference.

6250 Hz would be half the NFM bandwidth, but I don't know where that is coming from.

When connecting with sdrpp to a local Airspy, the frequency is accurate.

helioshk commented 10 months ago

I think the problem is, that the frequency range can be changed in SDR++, even if spyserver doesn't allow changing the frequency:

# Allow clients to retune and change of gain of the device
#
allow_control = 0
AlexandreRouma commented 10 months ago

Not a bug, SDR++ just doesn't support locking the frequency range.