Ernie,

I haven't looked at the codes URC exposes, but if you go into the Receiver's setup with a web browser you can set the 1050's Zone2 for "Fixed" output. I don't recall if you can set this "Fixed" output for anything other than 100%, but you can also set the initial and maximum volumes. In order to further bury things from customer tinkering, you can setup a "Scene" that is not available on the native remote, then lock the memory. Your program can call this hidden Scene.