The WRCJV12-5235-5245-5255-5265-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 5.245 to 5.255 GHz, Bandwidth 10 MHz, Insertion Loss 2 to 4.5 dB, Rejection 50 dB, VSWR 1.67:1. Tags: Module with Connectors, Cavity Filter. More details for WRCJV12-5235-5245-5255-5265-50 can be seen below.