After trying SatNogs with my RTL-SDR V3, I decided to go with an Aitspy R2 due to the better SNR. What I am experiencing is something weird. CAS-4A CW telemetry is a fair copy on my RTL-SDR but all I can receive with the Airspy is a weird signal that seems more some kind of FSK transmission.
Here’s the reception of CAS-4A with the Airspy:
This is CAS-4A with RTL-SDR:
Of course I am using the same antenna and Rspberry Pi.
What can be the problem with airspy?