The SiMF8R25/2R7-9D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7 to 9.5 GHz, Center Frequency 8.25 GHz, Insertion Loss 1.1 dB, Rejection 30 dB @6.2GHz&10.2GHz dB, 40 dB @5.8GHz &10.3GHz, 60 dB @DC~5.3GHz dB, 50 dB @11~15GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R25/2R7-9D2 can be seen below.