The WRCGV12-1870-1877.5-1882.5-1890-80-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8775 to 1.8825 GHz, Bandwidth 5 MHz, Insertion Loss 1 to 2.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-1870-1877.5-1882.5-1890-80-4 can be seen below.