The WRCT10-2134-2137.5-2142.5-2146-50-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.1375 to 2.1425 GHz, Bandwidth 5 MHz, Insertion Loss 1.25 to 2 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT10-2134-2137.5-2142.5-2146-50-1 can be seen below.