I am manually programming my mothers new pro 197 and am able to listen to everything she wants to but I also get many other talk groups that she doesn't wanna hear. The problem is with the Ohio MARCS system, she only wants to hear certain talk groups but the scanner also picks up many others. Is there a way to only listen to certain talk groups? When a new unwanted talk group appears I just lock them out. She didn't get the programming cable because i was out of town and able to be reached and she figured I'd be able to program it. I have been reading but can't seem to find the answer. Thanks!