The WBLB-T-BP-12100-820/3-6C from A-Info is a Band Pass Filter with Frequency 11.69 to 12.51 GHz, Insertion Loss 1 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-12100-820/3-6C can be seen below.