Quote Originally Posted by pic-ker View Post
I am sending a sync packet of '239' in a frame of 6 characters, But I find that there is no need for error checking as I am using this mainly for text messaging..

dave, do you have any kind of squelch circuit in mind ? and how do I detect when the carrier is present ?
There's a big, long thread (Serin Serout Problem is what I think it's called) that's got loads of good info on how to use some of those cheap RF modules, explanations on the preambles, sync's, etc.etc., why you need them, how many to put out there, etc. Lots of answers for you in there...