The WBLB-T-BP-3700-100-7C from A-Info is a Band Pass Filter with Frequency 3.65 to 3.75 GHz, Insertion Loss 2 dB, Rejection 40 dB, VSWR 1.50:1, Operating_Temperature -30 to 70 Degree C. Tags: Module with Connectors, Cavity Filter. More details for WBLB-T-BP-3700-100-7C can be seen below.