The BRF 2/1-125 from Amphenol Procom is a Band Stop Filter with Stopband Frequency 66 to 88 MHz, Insertion Loss 0.5 to 1 dB, Rejection 25 dB, Power 175 to 300 W, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for BRF 2/1-125 can be seen below.