The WBLB-T-BP-1900-400-9C from A-Info is a Band Pass Filter with Frequency 1.7 to 2.1 GHz, Insertion Loss 1 dB, Rejection 50 dB, Power 40 W, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-1900-400-9C can be seen below.