The WRCGV8-1837.5-1852.5-1872.5-1887.5-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8525 to 1.8725 GHz, Bandwidth 20 MHz, Insertion Loss 0.75 to 1 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV8-1837.5-1852.5-1872.5-1887.5-40 can be seen below.