The FB-0850SM from Marki Microwave is a Band Pass Filter with Frequency 7.85 to 9.2 GHz, Bandwidth 1.35 GHz, Center Frequency 8.5 GHz, Insertion Loss 2 to 3 dB, Rejection 35 to 50 dB. Tags: Surface Mount. More details for FB-0850SM can be seen below.