The SiMF10/R1-4E4 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 9.98 to 10.02 GHz, Center Frequency 9.95 GHz, Insertion Loss 4 dB, Rejection 30 dB @9.7GHz&10.4GHz, 40 dB @9.5GHz &10.6GHz, 60 dB @DC~8GHz, 50 dB @11.5~15GHz, Upper Rejection 30 to 50 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF10/R1-4E4 can be seen below.