The WRCT40-1891.5-1892.5-1907.5-1908.5-50-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8925 to 1.9075 GHz, Bandwidth 15 MHz, Insertion Loss 3.5 to 6 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-1891.5-1892.5-1907.5-1908.5-50-2 can be seen below.