The WRCGV12-2135-2145-2165-2175-75-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.145 to 2.165 GHz, Bandwidth 20 MHz, Insertion Loss 1 to 2.5 dB, Rejection 75 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-2135-2145-2165-2175-75-4 can be seen below.