The WRCT5-914-916.5-918.5-921-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 916.5 to 918.5 MHz, Bandwidth 2 MHz, Insertion Loss 0.5 to 1.25 dB, Rejection 50 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT5-914-916.5-918.5-921-50 can be seen below.