I am talking about the center beacon at 10.489.750,00 as shown on the picture.
This is the center frequency of the SDR range at 0 (zero) hertz.
All SDR receivers have this "blind" frequency in the middle of the reception range, sometimes with a phantom signal if the balance is not accurate or if there is some 50hz hum.
I have set the range of my online WEB SDR 5khz left of an important signal.
But more important to me is that you confirmed the same frequency error at 10489750.08