The SiMF13/2R5-7D1 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 11.75 to 14.25 GHz, Center Frequency 13 GHz, Insertion Loss 1.9 dB, Rejection 40 dB @DC~10.2GHz, 40 dB @15.7~20GHz, Upper Rejection 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF13/2R5-7D1 can be seen below.