The SiMF9R2/2R4-7D1 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 8 to 10.4 GHz, Center Frequency 9.2 GHz, Insertion Loss 2 dB, Rejection 30 dB @7.3GHz&11.2GHz, 40 dB @6.9GHz&11.6GHz, 60 dB @DC~6.3GHz, 60 dB @12.3~17GHz, Upper Rejection 30 to 60 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF9R2/2R4-7D1 can be seen below.