The WRCGV12-1880-1887.5-1912.5-1920-30 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8875 to 1.9125 GHz, Bandwidth 25 MHz, Insertion Loss 1 to 1.25 dB, Rejection 30 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-1880-1887.5-1912.5-1920-30 can be seen below.