The WRCT8-874-879-884-889-80-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 879 to 884 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 WRCT8-874-879-884-889-80-1 can be seen below.