The WRCT5-914.5-919.5-921.5-926.5-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 919.5 to 921.5 MHz, Insertion Loss 0.5 to 1.25 dB, Rejection 50 dB, VSWR 1.43:1, Center Frequency 920.5 MHz. Tags: Module with Connectors, Cavity Filter. More details for WRCT5-914.5-919.5-921.5-926.5-50 can be seen below.