The BRF 4/3-200 from Amphenol Procom is a Band Stop Filter with Stopband Frequency 66 to 88 MHz, Insertion Loss 1.5 to 3 dB, Power 200 to 350 W, VSWR 1.50:1, Operating_Temperature -30 to 60 Degree C. Tags: Module with Connectors, Cavity Filter. More details for BRF 4/3-200 can be seen below.