This tends to be a good resource: http://www.miklor.com/

clark@clarkturnertuning.com wrote: I am confused even more.. I understand then we cannot use chirp to program the radio? It does not offset when I key and no repeater comes back. If I set the radio to a repeater it does not show both - and + lit and works fine and the repeater comes back. Sorry. I am very confused as to how a radio that is not working is normal and expected behavior. Thanks again for any help.