The WRCT8-830.5-834-839-842.5-60-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 834 to 839 MHz, Bandwidth 5 MHz, Insertion Loss 0.6 to 1.25 dB, Rejection 60 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-830.5-834-839-842.5-60-2 can be seen below.