The BRF 70/3-250 from Amphenol Procom is a Band Stop Filter with Stopband Frequency 380 to 470 MHz, Insertion Loss 1.5 to 3 dB, Rejection 60 dB, Power 200 to 350 W, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for BRF 70/3-250 can be seen below.