The WRCFV16-3587.5-3600-3800-3812.5-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 3.6 to 3.8 GHz, Bandwidth 200 MHz, Insertion Loss 2 to 2.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCFV16-3587.5-3600-3800-3812.5-40 can be seen below.