The WBLB-T-BP-1250-400-9C from A-Info is a Band Pass Filter with Frequency 1.05 to 1.45 GHz, Insertion Loss 0.5 dB, Rejection 20 to 45 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-1250-400-9C can be seen below.