I’m trying to use LimeSDR for receiving 20 meters band. My antenna is a DIY receive-only magnetic loop antenna made from 2 meters long coaxial cable. Everything described below was done during weekends, at ~ 13-00 local time, when the band is open and hams are pretty active.
My Gqrx settings are the following:
Gqrx shows me the following:
I tried to use hardware AGC and increase decimation - it doesn’t seem to make any difference.
If I increase the bandwidth:
… I can listen many AM stations in nearest bands:
When I use RTL-SDR + Ham It Up with the same antenna the picture is completely different:
Here I receive a strong signal which seems to be RTTY.
And here is SSB:
LimeSDR was tuned, the firmware is upgraded to the latest version using
LimeUtil --update. Previously it worked pretty well with 443 MHz and 2.4 GHz frequencies.
I’m not sure what exactly is a problem. My antenna is probably not the best one, but RTL-SDR seems to be pretty happy with it. What can I do to receive amateur radio with LimeSDR?