The WRCD10-1919-1919.8-1920.2-1921-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9198 to 1.9202 GHz, Bandwidth 0.4 MHz, Insertion Loss 1.25 to 3.5 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD10-1919-1919.8-1920.2-1921-50 can be seen below.