The WRCT8-838-842-852-856-40-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 842 to 852 MHz, Bandwidth 10 MHz, Insertion Loss 0.6 to 1 dB, Rejection 40 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-838-842-852-856-40-2 can be seen below.