The WRCGV5-1887.5-1897.5-1902.5-1912.5-40-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8975 to 1.9025 GHz, Bandwidth 5 MHz, Insertion Loss 0.5 to 1.25 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-1887.5-1897.5-1902.5-1912.5-40-1 can be seen below.