The SiMF8R4/2-6D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.4 to 9.4 GHz, Center Frequency 8.4 GHz, Insertion Loss 1.5 dB, Rejection 30 dB @6.4GHz&10.2GHz, 40 dB @5.8GHz&10.6GHz, 60 dB @DC~4.8GHz, 60 dB @10.9~20GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R4/2-6D2 can be seen below.