The WBCTB3-811.5-830-833-851.5-50 from Wainwright Instruments is a Band Pass Filter with Frequency 830 to 833 MHz, Bandwidth 3 MHz, Center Frequency 831.5 MHz, Insertion Loss 1.25 to 1.5 dB, Rejection 50 dB. Tags: Module with Connectors, Cavity Filter. More details for WBCTB3-811.5-830-833-851.5-50 can be seen below.