The RF tech was dumping a crate of old radios, when I saw a u400 still in its unopened plastic wrapper. I grabbed it along with the mike, still in its plastic condom. I know its old stuff [20-25 yrs] but it could be good for something. What I now need is the programing key board [ ex-494 ]. E-bay had no hits for this item, so I'm out unless anyone here can help.