And yet many ham radio users are using encryption. One example is a club repeater that is only open to members of the club. All paying members of the club are given the key. So they believe since all authorized paying members of the club have the key, the repeater is open to everyone who is allowed to use it. Probably not legal, & it’s been going on for years, but no one has complained. Oh, I’m not a member so it doesn’t affect me. OTOH, some DMR repeaters are using RAS which is perfectly legal as it’s not encryption.