The WBLB-T-BP-12100-800/3-3C from A-Info is a Band Pass Filter with Frequency 11.7 to 12.5 GHz, Insertion Loss 0.5 dB, Rejection 40 to 45 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-12100-800/3-3C can be seen below.