The WRCT5-919.2-919.9-920.1-920.8-30 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 919.9 to 920.1 MHz, Bandwidth 0.2 MHz, Insertion Loss 0.5 to 1.75 dB, Rejection 30 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT5-919.2-919.9-920.1-920.8-30 can be seen below.