The WRCGV5-821-833-843-855-35 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 833 to 843 MHz, Bandwidth 10 MHz, Insertion Loss 0.5 to 1 dB, Rejection 35 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-821-833-843-855-35 can be seen below.