The WRCGV6-831-840-850-859-35 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 840 to 850 MHz, Bandwidth 10 MHz, Insertion Loss 0.65 to 1 dB, Rejection 35 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV6-831-840-850-859-35 can be seen below.