The WRCGV12-1857.5-1872.5-1887.5-1902.5-80-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8725 to 1.8875 GHz, Bandwidth 15 MHz, Insertion Loss 1 to 2 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-1857.5-1872.5-1887.5-1902.5-80-3 can be seen below.