Who may use a repeater or remote base?.
The licensee of any amateur station has the right to limit the use of his or her station to only certain other licensees! When it comes to repeaters, the FCC even says so in Part 97. This rule states limiting the use of a repeater to only certain users is permissible [97.205(e)]. “Closed” repeaters may use CTCSS or other techniques to limit access to designated users.