The WRCTG12+16-2490-2500-2570-2580-80-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.5 to 2.57 GHz, Bandwidth 70 MHz, Insertion Loss 2 to 3.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCTG12+16-2490-2500-2570-2580-80-4 can be seen below.