The SiMF8R2/2R3-9D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.15 to 9.25 GHz, Center Frequency 8.2 GHz, Insertion Loss 2 dB, Rejection 30 dB @6.4GHz&9.95GHz, 40 dB @6.2GHz&10.0 GHz, 60 dB @DC~5.6GHz, 60 dB @11~20GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R2/2R3-9D2 can be seen below.