Shorts or non-functioning circuits on one of the bands- but leaving the other bands operable- it is like a system of say- juke boxes or speakers controlled by a rotary switch- one component could be...
Not easily enough to make it worthwhile. It's something like changing a Ford into a Lexus. You could do it, but it would be faster, easier, and cheaper to buy the Lexus, and you'd have a lot less...