Change frequencies by arduino

avibd:
I have one more question
in pe4302 breakout board written that the range is: "DC-4GHz"

what does "DC" mean?

I am worried about your lack of knowledge of the most most basic terminology - please
explain exactly what you are trying to do, ie what end result you want to achieve, I have
a worry that you are completely confused about frequency, amplitude, signal processing in
general. Don't say how you think the result should be achieved, say what result you want.