The WBLB-T-BP-11500-1000-9C from A-Info is a Band Pass Filter with Frequency 11 to 12 GHz, Insertion Loss 1.5 dB, Rejection 39 to 42 dB, VSWR 1.70:1, Operating_Temperature -30 to 70 Degree C. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-11500-1000-9C can be seen below.