So the radios are hard to work on the 480? I heard the 480 was a lot
harder to learn

The Apollo/IIMorrow systems were very logical and followed a branching
tree structure (I believe the present term is chapters and pages).
IIMorrow originally placed a diagram of structure in each manual.
Viewing the diagram made the operation and functions self-explanatory.
As the systems grew in complexity, the manuals changed and the "tree"
was no longer included. By sitting down with the manual, you can create
your own tree by diagraming the "chapters and pages" from the manual.