The WRCA12-818-824-894-900-40-3 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 824 to 894 MHz, Bandwidth 70 MHz, Insertion Loss 1.2 to 1 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCA12-818-824-894-900-40-3 can be seen below.