The WRCGV12-3050-3300-3800-4050-60 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 3.3 to 3.8 GHz, Bandwidth 500 MHz, Insertion Loss 1.25 to 1.5 dB, Rejection 60 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-3050-3300-3800-4050-60 can be seen below.