The SiMF6R75/R5-7D3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 6.5 to 7 GHz, Center Frequency 6.75 GHz, Insertion Loss 2.7 dB, Rejection 30 dB @6.05GHz&7.5GHz, 40 dB @5.9GHz&7.55GHz, 60 dB @DC~5.4GHz, 60 dB @8~11.5GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF6R75/R5-7D3 can be seen below.