The WRCJV12-2518-2543-2643-2668-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.543 to 2.643 GHz, Bandwidth 100 MHz, Insertion Loss 1 to 1.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCJV12-2518-2543-2643-2668-40 can be seen below.