The WRCD20-1735.5-1737.5-1757.5-1759.5-40-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.7375 to 1.7575 GHz, Bandwidth 20 MHz, Insertion Loss 2 to 3.5 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD20-1735.5-1737.5-1757.5-1759.5-40-4 can be seen below.