The WRCGV5-873-880-883-890-30 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 880 to 883 MHz, Bandwidth 3 MHz, Insertion Loss 0.5 to 1 dB, Rejection 30 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-873-880-883-890-30 can be seen below.