The SiMF12R65/2R1-7D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 11.75 to 13.65 GHz, Center Frequency 12.7 GHz, Insertion Loss 3 dB, Rejection 30 dB @10.55GHz&14.65GHz, 40 dB @10GHz&14.9GHz, 60 dB @DC~8GHz, 55 dB @12~16GHz, Upper Rejection 30 to 55 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF12R65/2R1-7D2 can be seen below.