http://wireless.fcc.gov/services/ind...t_1&id=amateur http://wireless.fcc.gov/services/ind...t_1&id=amateur communications third party operating limitations http://wireless.fcc.gov/services/ind...t_1&id=amateur FCC http://wireless.fcc.gov/services/ind...t_1&id=amateur Communications & Operations Communications & Operations http://wireless.fcc.gov/services/ind...t_1&id=amateur space shuttle http://wireless.fcc.gov/services/ind...t_1&id=amateur