The WRCT12-1880-1885-1915-1920-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.885 to 1.915 GHz, Bandwidth 30 MHz, Insertion Loss 1.5 to 2 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT12-1880-1885-1915-1920-40 can be seen below.