I'm trying to receive GPS with my SDR and a patch antenna, as per http://sdrgps.blogspot.com/2015/12/acqu ... tlsdr.html or https://gnss-sdr.org/docs/tutorials/gns ... -receiver/
However, it's not getting a lock on any satellites. When I run front-end-cal to get the calibration values I get a different value each time I run it - e.g.
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Sampling frequency =1999986.46 [Hz] IF bias present in baseband=10668.24 [Hz] Sampling frequency =1999966.94 [Hz] IF bias present in baseband=26040.81 [Hz] Sampling frequency =1999962.02 [Hz] IF bias present in baseband=29915.58 [Hz]