The SiMF8R2/1R2-8D3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.5 to 8.8 GHz, Center Frequency 8.15 GHz, Insertion Loss 2.5 dB, Rejection 30 dB @6.85GHz&9.55GHz, 40 dB @6.7GHz&9.7GHz, 60 dB @DC~6GHz, 60 dB @10~15GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF8R2/1R2-8D3 can be seen below.