The WRCT8-743-745.5-750.5-753-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 745.5 to 750.5 MHz, Bandwidth 5 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 50 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-743-745.5-750.5-753-50 can be seen below.