Below 30Mhz on LimeSDR Mini - Full of garbage


From my use of my LimeSDR Mini I have found that FM garbage is everywhere. Even when almost no FM stations are viable on the FM Broadcast band. (I have an FM Stop Filter and also they are bearly visable)

Yet there is still a ton of them from about 50 Mhz and lower.

Why does the LimeSDR Mini have such a bad signal imaging problem?


Use good hardware BPF (or LPF) with high attenuation above 30MHz. Also, try RX GFIR filters.