Quote Originally Posted by -Dan- View Post
I considered using count, but i do not no its limitations what will it count up to?.
COUNT Pin,Period,Var
Count the number of pulses that occur on Pin during the Period and
stores the result in Var. Pin is automatically made an input.........
Does that give you a clue as to the answer?

so i have got an external prescaler which will divide by 256 or 64.
You're going to divide RF using an 'external prescaler'?
Good luck with that...