The BPF-C550+ from Mini Circuits is a Band Pass Filter with Frequency 100 to 1000 MHz, Center Frequency 550 MHz, Insertion Loss 1.1 to 2.2 dB, Upper Rejection 30 to 39 dB, Lower Rejection 35 to 46 dB. Tags: Surface Mount, Lumped Component Filter. More details for BPF-C550+ can be seen below.