The WRCGV5-1820-1850-1910-1940-20-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.85 to 1.91 GHz, Bandwidth 60 MHz, Insertion Loss 0.5 to 0.75 dB, Rejection 20 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV5-1820-1850-1910-1940-20-1 can be seen below.