The BRF 2/3 from Amphenol Procom is a Band Stop Filter with Stopband Frequency 144 to 175 MHz, Bandwidth 1 MHz, Insertion Loss 0.8 to 1.3 dB, Rejection 53 dB, Power 50 W. Tags: Module with Connectors, Cavity Filter. More details for BRF 2/3 can be seen below.