The SiMS5R6/R6-6D3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 5.4 to 5.9 GHz, Center Frequency 5.65 GHz, Insertion Loss 3 dB, Rejection 30 dB @4.8GHz&6.2GHz, 40 dB @4.7GHz&6.4GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS5R6/R6-6D3 can be seen below.