The WRCT20-1897.5-1902.5-1917.5-1922.5-80 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9025 to 1.9175 GHz, Bandwidth 15 MHz, Insertion Loss 2.25 to 3.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT20-1897.5-1902.5-1917.5-1922.5-80 can be seen below.