The WBLB-T-BP-11900-440T-3C from A-Info is a Band Pass Filter with Frequency 11.68 to 12.12 GHz, Insertion Loss 0.5 dB, Rejection 25 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-11900-440T-3C can be seen below.