The WRCT16-819.5-821.5-831.5-833.5-75-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 821.5 to 831.5 MHz, Bandwidth 10 MHz, Insertion Loss 1 to 3 dB, Rejection 75 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT16-819.5-821.5-831.5-833.5-75-1 can be seen below.