The SIMF6R2/R4-6E3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 6 to 6.4 GHz, Center Frequency 6.2 GHz, Insertion Loss 2 dB, Rejection 30 dB @5.65GHz&6.8GHz, 40 dB @5.5GHz &6.9GHz, 60 dB @DC~4.6GHz, 60 dB @7.5~10.5GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SIMF6R2/R4-6E3 can be seen below.