The WRCGV5-819.5-839.5-854.5-874.5-40-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 839.5 to 854.5 MHz, Bandwidth 15 MHz, Insertion Loss 0.5 to 0.6 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-819.5-839.5-854.5-874.5-40-3 can be seen below.