Hi you lot. Does anyone know if there is a way to block certain FM frequencies while letting others through? Where I am I have Storeton, Llangollen and Capital Liverpool blasting into my SDR meaning I can't set the gain too high without having receiver overload. I know there are full FM band blockers but thats not what I'm after .

put the rx in a farady cage ,what an option ,or use a band pass filter tunable.

Neither is going to work, Radium - he just wants to eliminate particular specific frequencies.

You need stub filters cut for the frequencies that you need to attenuate. The ARRL handbook shows how to calculate and tweak them.

thanks albert