The SiMS8R2/R35-6D3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8.1 to 8.4 GHz, Center Frequency 8.25 GHz, Insertion Loss 3.5 dB, Rejection 30 dB @7.7GHz&8.75GHz, 40 dB @7.6GHz&8.85GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS8R2/R35-6D3 can be seen below.