The WRCGV12-877.5-887.5-907.5-917.5-70-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 887.5 to 907.5 MHz, Bandwidth 20 MHz, Insertion Loss 1.25 to 2 dB, Rejection 70 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-877.5-887.5-907.5-917.5-70-3 can be seen below.