I've asked this question over on Aviation Stack Exchange, but nobody over there knew the answer, so I thought I'd ask here.
I'm a student pilot. I know that my pilot's license also acts as permission to use the radio in an airplane. But, I recently purchased a handheld airband radio as a backup to the plane's radio. If I wanted to use my handheld on the ground, not in a plane, what license would I need? Is this even possible?
(I already have a Restricted Radiotelephone license, if that helps.)
(No, I don't know why I would want to do so. I just like having my options open.)