The WRCGV12-1820-1835-1850-1865-80-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.835 to 1.85 GHz, Bandwidth 15 MHz, Insertion Loss 1 to 2 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-1820-1835-1850-1865-80-2 can be seen below.