The SiMS4R62/R2-6D5 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 4.55 to 4.75 GHz, Center Frequency 4.65 GHz, Insertion Loss 4 dB, Rejection 30 dB @4.25GHz&4.95GHz, =40 dB @4GHz&5.1GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS4R62/R2-6D5 can be seen below.