The SiMF7R4/1R2-7D3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 6.8 to 8 GHz, Center Frequency 7.4 GHz, Insertion Loss 2 dB, Rejection 30 dB @6GHz&8.65GHz, 40 dB @5.8GHz&8.8GHz, 60 dB @DC to 5GHz, 40 dB @10~12GHz dB, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF7R4/1R2-7D3 can be seen below.