The WRCT40-1959.2-1960-1965-1965.8-50-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.96 to 1.965 GHz, Bandwidth 5 MHz, Insertion Loss 3.5 to 6.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-1959.2-1960-1965-1965.8-50-3 can be seen below.