The WRCGV6-1738-1745-1750-1757-40-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.745 to 1.75 GHz, Bandwidth 5 MHz, Insertion Loss 0.65 to 1.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV6-1738-1745-1750-1757-40-4 can be seen below.