The WRCT20-1887.5-1892.5-1907.5-1912.5-80-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8925 to 1.9075 GHz, Bandwidth 15 MHz, Insertion Loss 2.25 to 3.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT20-1887.5-1892.5-1907.5-1912.5-80-2 can be seen below.