The ZVBP-3875-S+ from Mini Circuits is a Band Pass Filter with Frequency 3845 to 3905 MHz, Center Frequency 3875 MHz, Insertion Loss 0.6 to 1.2 dB, Upper Rejection 37 to 43 dB, Lower Rejection 37 to 43 dB. Tags: Module with Connectors, Cavity Filter. More details for ZVBP-3875-S+ can be seen below.