The WRCT16-721.3-721.8-723.2-723.7-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 721.8 to 723.2 MHz, Bandwidth 1.4 MHz, Insertion Loss 1 to 4 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT16-721.3-721.8-723.2-723.7-40 can be seen below.