The WRCGV8-1830-1840-1870-1880-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.84 to 1.87 GHz, Bandwidth 30 MHz, Insertion Loss 0.75 to 1.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV8-1830-1840-1870-1880-40 can be seen below.