The idom 3 is a great simple repeater controller that is simple to use and works well. My experience with having Chris Wilson interface for me was a pleasure. He was very helpful and went out of his way to assist me in getting my idom3 to work. Chris Wilson is very knowledgeable in this subject. If you need any help in two-way radio communication Chris is willing to go out of his way to assist anyone. Great work Chris Wilson. If you need any help here is the link http://www.wilsonconsult.com/main/