The SiMF8R55/1R1-10D3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8 to 9.1 GHz, Center Frequency 8.55 GHz, Insertion Loss 2.7 dB, Rejection 30 dB @7.5GHz&9.6GHz, 40 dB @7.4GHz&9.8GHz, 60 dB @DC~7GHz, 50 dB @10.1~12.6GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R55/1R1-10D3 can be seen below.