1、Blocks the FM transmission band between 88‑108 MHz, band filter module can be practical and useful. 2、Supports that broadcast frequency band blocked between 88 ~ 108 MHz while attenuation exceeds 50dB. 3、And small and convenient FM filter board can be used with confidence for its guaranteed quality. 4、The insertion loss is less than 0.5 dB between 0 and 1 GHz, and mostly less than 1.5 dB between 1 and 3 GHz. 5、Designed for maximum attenuation 88‑108 MHz and the maximum attenuation between the 3dB roll point is 76 MHz and 122 MHz. Item Type: Band filter module Insertion Loss: Less than 0.5 dB between 0 and 1 GHz, and mostly less than 1.5 dB between 1 and 3 GHz. Broadcast Frequency Band Blocked: When the attenuation exceeds 50dB, the broadcast frequency band is blocked between 88 ~ 108 MHz. Design Function: Designed for maximum attenuation between 88-108 MHz Maximum Attenuation Between 3dB Roll Points: 76 MHz and 122 MHz 1 x Band Filter Module 1 x Connector