The WRCGV10-818-830-840-852-80-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 830 to 840 MHz, Bandwidth 10 MHz, Insertion Loss 1 to 1.5 dB, Rejection 80 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCGV10-818-830-840-852-80-2 can be seen below.