The WRCT40-1956.7-1957.5-1962.5-1963.3-50-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9575 to 1.9625 GHz, Bandwidth 5 MHz, Insertion Loss 3.5 to 6.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-1956.7-1957.5-1962.5-1963.3-50-4 can be seen below.