The BRF 70/1-250 from Amphenol Procom is a Band Stop Filter with Stopband Frequency 380 to 470 MHz, Insertion Loss 0.5 to 1 dB, Rejection 20 dB, Power 200 to 350 W, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for BRF 70/1-250 can be seen below.