The WRCT40-2124-2125-2140-2141-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.125 to 2.14 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 WRCT40-2124-2125-2140-2141-50 can be seen below.