The WRCGV10-1890-1900-1940-1950-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9 to 1.94 GHz, Bandwidth 40 MHz, Insertion Loss 0.75 to 2 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV10-1890-1900-1940-1950-40 can be seen below.