The SiMF9R45/2R4-2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8.25 to 10.65 GHz, Center Frequency 9.45 GHz, Insertion Loss 2 dB, Rejection 30 dB @7.4GHz&11.45GHz, 40 dB @7GHz&12GHz, 60 dB @DC~6GHz, 50 dB @13~17GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF9R45/2R4-2 can be seen below.