The BPF-A490 from Mini Circuits is a Band Pass Filter with Frequency 400 to 600 MHz, Bandwidth 200 MHz, Center Frequency 490 MHz, Insertion Loss 1.06 to 1.58 dB, Rejection 20 dB @ 280 and 680 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BPF-A490 can be seen below.