Is this autopatch for a repeater system or for a stand alone simplex radio? Try going to:www.hamtronics.com
They have a big selection of autopatch boards and controllers that can be used for both repeater and simplex radios; they are available in kit and fully constructed boards.
You can also check out several of the larger Ham radio distributors, they usually carry autopatchs in one complete package that can be used for either application.
Hope this helps.