The WRCT20-1870.5-1872.5-1892.5-1894.5-40-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8725 to 1.8925 GHz, Bandwidth 20 MHz, Insertion Loss 2.25 to 3.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT20-1870.5-1872.5-1892.5-1894.5-40-1 can be seen below.