The SiMF17R5/5R7-7D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 14.7 to 20.3 GHz, Center Frequency 17.5 GHz, Insertion Loss 2 dB, Rejection 30 dB @12.3GHz&23GHz, 40 dB @11.5GHz&24GHz, 60 dB @DC-10GHz, 35 dB @24-27GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF17R5/5R7-7D2 can be seen below.