The WRCT40-2430.75-2431.75-2451.75-2452.75-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.43175 to 2.45175 GHz, Bandwidth 20 MHz, Insertion Loss 3 to 6 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-2430.75-2431.75-2451.75-2452.75-50 can be seen below.