Michał Sternadel

Did you try generating fake signal with 8 bit I/Q data format? [link](https://github.com/osqzss/gps-sdr-sim/issues/245#issuecomment-623588974)

Try to generate fake signal with **-b 8** option like this: `gps-sdr-sim -b 8 -e brdc1090.20n -l 55.2768359,6.2364598,100` then push it to the air using: `hackrf_transfer -t gpssim.bin -f 1575420000...