The WRCA12-863-863.5-867.5-868-30 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 863.5 to 867.5 MHz, Bandwidth 4 MHz, Insertion Loss 1.5 to 3 dB, Rejection 30 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCA12-863-863.5-867.5-868-30 can be seen below.