The SiMF11R9/7-8D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 7.9 to 15.4 GHz, Center Frequency 11.65 GHz, Insertion Loss 1 dB, Rejection 20 dB @5.3GHz&16.4GHz, 30 dB @4.3GHz, 45 dB @DC~1.5GHz, Upper Rejection 20 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF11R9/7-8D2 can be seen below.