The WRCT8-851.5-856.5-861.5-866.5-80-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 856.5 to 861.5 MHz, Bandwidth 5 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 80 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-851.5-856.5-861.5-866.5-80-2 can be seen below.