Ogg artifacts frequency offset


#1

Hi!
I’ve tried to decode ogg files from BPSK9k6 observations (e.g. https://network.satnogs.org/observations/522070/) on my own and discovered that the frequency shift is always 1.5 kHz, which is suitable for BPSK1k2 but not for BPSK9k6 (and actually in the observation that I’ve mentioned there are two frames at BPSK1k2 and I can decode them properly).

I’m not sure which decoder is used byt the SatNOGS in this case - I found three decoders for BPSK over here https://gitlab.com/librespacefoundation/satnogs/gr-satnogs/tree/master/apps/flowgraphs. Which one is actually used? Do you have any idea what’s wrong and where? :slight_smile: