The WRCGV12-1747.4-1757.4-1777.4-1787.4-75 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.7574 to 1.7774 GHz, Bandwidth 20 MHz, Insertion Loss 1 to 2.5 dB, Rejection 75 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV12-1747.4-1757.4-1777.4-1787.4-75 can be seen below.