The WBLB-T-BP-12000-2000-9C from A-Info is a Band Pass Filter with Frequency 11 to 13 GHz, Insertion Loss 1 dB, Rejection 70 dB, Power 1 W, VSWR 1.70:1. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-12000-2000-9C can be seen below.