The WRCT10-2531.995-2534.375-2535.625-2538.005-50-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.534375 to 2.535625 GHz, Bandwidth 1.25 MHz, Insertion Loss 1.25 to 1.75 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT10-2531.995-2534.375-2535.625-2538.005-50-2 can be seen below.