The ZABP-4R5-S+ from Mini Circuits is a Band Pass Filter with Frequency 2 to 7 MHz, Center Frequency 4.5 MHz, Insertion Loss 0.5 to 1.5 dB, Upper Rejection 20 to 80 dB, Lower Rejection 20 to 36 dB. Tags: Module with Connectors, Lumped Component Filter. More details for ZABP-4R5-S+ can be seen below.