The ZABP-450-S+ from Mini Circuits is a Band Pass Filter with Frequency 400 to 510 MHz, Center Frequency 450 MHz, Insertion Loss 1 to 2 dB, Upper Rejection 20 to 50 dB, Lower Rejection 20 to 50 dB. Tags: Module with Connectors, Lumped Component Filter. More details for ZABP-450-S+ can be seen below.