The SiMF9/6-10D1 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 6 to 11.9 GHz, Center Frequency 9 GHz, Insertion Loss 1 dB, Rejection 30 dB @4.2GHz&13.4GHz, 40 dB @3.2GHz&12.6GHz, 60 dB @DC~1GHz, 30 dB @13~20GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF9/6-10D1 can be seen below.