The WRCGV5-851-858-863-870-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 858 to 863 MHz, Bandwidth 5 MHz, Insertion Loss 0.5 to 1.25 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-851-858-863-870-40 can be seen below.