The best thing I ever did was teach my Jagd to come to the tone on the collar. I'll never have another dog that "ranges out" that won't learn that one. Also taught it with the collar to come to a store bought whistle. Another valuable one. My collar only has about 1/2 mile range but a whistle is good for well beyond that. Heck of a lot easier than yellin and the dog knows where I'm when I blow it (unlike the tone on the collar).

Chris