The SiMS13R1/2R2-8D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 12 to 14.2 GHz, Center Frequency 13.1 GHz, Insertion Loss 2 dB, Rejection 30 dB @10.7GHz&15.2GHz, 40 dB @10.4GHz&15.6GHz, 60 dB @DC~5GHz, 50 dB @16~21GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS13R1/2R2-8D2 can be seen below.