The BFTC-500+ from Mini Circuits is a Band Pass Filter with Frequency 400 to 600 MHz, Center Frequency 500 MHz, Insertion Loss 4 to 5.5 dB, Upper Rejection 25 to 33 dB, Lower Rejection 25 to 38 dB. Tags: Ceramic, Ceramic Filter. More details for BFTC-500+ can be seen below.