The WRCJV12-1940-1950-1970-1980-80-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.95 to 1.97 GHz, Bandwidth 20 MHz, Insertion Loss 1 to 3 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCJV12-1940-1950-1970-1980-80-3 can be seen below.