The WRCT8-903.875-905.375-906.625-908.125-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 905.375 to 906.625 MHz, Bandwidth 1.25 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 50 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-903.875-905.375-906.625-908.125-50 can be seen below.