The WRCJV12-1880-1890-1910-1920-80-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.89 to 1.91 GHz, Bandwidth 20 MHz, Insertion Loss 1 to 3 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCJV12-1880-1890-1910-1920-80-2 can be seen below.