The SiMF11/2R2-7D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 9.8 to 12 GHz, Center Frequency 10.9 GHz, Insertion Loss 1.5 dB, Rejection 30 dB @8.6GHz&13GHz, 40 dB @8.2GHz&13.2GHz, 60 dB @DC~8GHz, 50 dB @14~20GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF11/2R2-7D2 can be seen below.