The WRCFV8-3544.5-3547.5-3552.5-3555.5-35-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 3.5475 to 3.5525 GHz, Bandwidth 5 MHz, Insertion Loss 1.5 to 3.5 dB, Rejection 35 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCFV8-3544.5-3547.5-3552.5-3555.5-35-1 can be seen below.