The SiMS11R2/1-4D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 10.7 to 11.7 GHz, Center Frequency 11.2 GHz, Insertion Loss 1.6 dB, Rejection 30 dB @9.7GHz&11.25GHz, 40 dB @9.2GHz&13.2GHz, 60 dB @DC~2.19GHz, 60 dB @8.9~15.4GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS11R2/1-4D2 can be seen below.