Hi Jeff,
I'm sorry to say that you won't find a universal remote that will fit your fathers existing controls. Electro-Lift has been out of business for quite a while now. They were made by Chamberlain, who also makes Sears units, but even the digital control units are the wrong format. I would suggest getting a new radio set for the opener. If you decide to get rid of the old radio controls, let me know. =-)
Matt
(Mich_AOL_User@yahoo.com)