The WRCD20-1900.5-1902.5-1917.5-1919.5-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9025 to 1.9175 GHz, Bandwidth 15 MHz, Insertion Loss 2 to 3.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD20-1900.5-1902.5-1917.5-1919.5-40 can be seen below.