The WRCJV20-2548-2558-2628-2638-60 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.558 to 2.628 GHz, Bandwidth 70 MHz, Insertion Loss 1.5 to 4 dB, Rejection 60 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCJV20-2548-2558-2628-2638-60 can be seen below.