The BRF 70/3 from Amphenol Procom is a Band Stop Filter with Stopband Frequency 400 to 470 MHz, Bandwidth ±2.2 to 3 MHz, Insertion Loss 0.5 dB, Rejection 38 dB, Power 50 W. Tags: Module with Connectors, Cavity Filter. More details for BRF 70/3 can be seen below.