The WRCD20-1733-1735-1755-1757-40-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.735 to 1.755 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 WRCD20-1733-1735-1755-1757-40-2 can be seen below.