The WBLB-T-BP-3050-500/3-8C from A-Info is a Band Pass Filter with Frequency 2.8 to 3.3 GHz, Insertion Loss 1 dB, Rejection 45 dB, VSWR 2.00:1, Operating_Temperature -30 to 70 Degree C. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-3050-500/3-8C can be seen below.