The WRCT40-1916.7-1917.5-1922.5-1923.3-50-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9175 to 1.9225 GHz, Bandwidth 5 MHz, Insertion Loss 3.5 to 6.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-1916.7-1917.5-1922.5-1923.3-50-4 can be seen below.