The SiMF13R2/2-3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 12.05 to 14.3 GHz, Center Frequency 12.7 GHz, Insertion Loss 2.5 dB, Rejection 30 dB @11GHz&15.35GHz, 40 dB @10.65GHz&15.6GHz, 60 dB @DC~8GHz, 55 dB @17~20GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF13R2/2-3 can be seen below.