Ham radio is not an acronym.
It is spelled lowercase just like the meat.
It is not a proper noun either.
Just lowercase ham radio.
Amateur radio, also known as ham radio, is the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication.
Amateur radio.
No, hamfag is unaware of any category of walkie-talkies (handheld transceivers) featuring some specific band that is going to be banned.