The SiMF9/2R2-7D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.85 to 10.15 GHz, Center Frequency 9 GHz, Insertion Loss 1.8 dB, Rejection 30 dB @7GHz&11GHz, 40 dB @6.4GHz&11.3GHz, 60 dB @DC~5.7GHz, 50 dB @11.4~23GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF9/2R2-7D2 can be seen below.