FM Broadcast Filter | 88 -108 MHz Filter for RTL-SDR | SDR Band-Stop Filter

This filter will filter out the broadcast FM band from 88 MHz – 108 MHz with an over 40 dB of attenuation, and the 3dB roll off points are at 76 MHz and 122 MHz. This could be very helpful if you have very strong FM broadcasts in your location that overloads the SDR dongle. It is also known as “FM Trap”.

Notes: For RX only. Designed for SDR users, but might also be useful for TV users struggling with FM interference. However TV users please carefully check the spectrum analyzer graphs and 3dB roll off points to ensure that it will not block a TV signal of interest.

Specification:

Insertion Loss: < 0.5 dB (0 – 1GHz), < 1.5 dB (1 – 3 GHz)

Attenuation: 40 dB @ 88 -108 MHz