The WRCGV10-911-921-960-970-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 921 to 960 MHz, Bandwidth 39 MHz, Insertion Loss 1 to 1.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV10-911-921-960-970-50 can be seen below.