The WRCGV16-2490-2500-2570-2580-50-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.5 to 2.57 GHz, Bandwidth 70 MHz, Insertion Loss 1.25 to 2.75 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV16-2490-2500-2570-2580-50-4 can be seen below.