The WRCT40-2131.5-2132.5-2147.5-2148.5-50-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.1325 to 2.1475 GHz, Bandwidth 15 MHz, Insertion Loss 3.5 to 6 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-2131.5-2132.5-2147.5-2148.5-50-2 can be seen below.