Other factors enter the equation, which is why the OP cannot get an exact number, assuming that one is possible, which it isn't. Yes, there are theoretical maximum operating ranges, but much of that is as it is because of legal considerations. Which brings us to our first set of info from the OP that needs to be known. Which country are you intending to operate from? Then, which available band are you planning to use that is available in that particular country? Some countries use different RF bands with different power levels and antenna types being permissable. This is just the beginniing of the things we need to know in order to accurately answer the OP's original question.


Ed Cregger