The WRCGV12-1737.5-1745-1750-1757.5-80-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.745 to 1.75 GHz, Bandwidth 5 MHz, Insertion Loss 1 to 2.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-1737.5-1745-1750-1757.5-80-2 can be seen below.