The SiMF9/1R2-7D4 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8.4 to 9.6 GHz, Center Frequency 9 GHz, Insertion Loss 2 dB, Rejection 30 dB @7.6GHz&10.25GHz, 40 dB @7.4GHz&10.3GHz, 60 dB @DC~6.5GHz, 50 dB @10.5~13.5GHz, Upper Rejection 30 to 55 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF9/1R2-7D4 can be seen below.