The SiMF11/2R5-7D1 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 9.75 to 12.25 GHz, Center Frequency 11 GHz, Insertion Loss 2 dB, Rejection 30 dB @8.96GHz&13.13GHz, 40 dB @8.68GHz&13.38GHz, 60 dB @DC~7.9GHz, 60 dB @14.05~18.6GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF11/2R5-7D1 can be seen below.