The WRCT8-839.5-844.5-849.5-854.5-80-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 844.5 to 849.5 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 WRCT8-839.5-844.5-849.5-854.5-80-4 can be seen below.