I don't think Childrens Hospital Airmed is going to be using an Acadian T.G. Childrens Hospital owns their own heli. When you state that the pilot stated they were using VHF Hi they probably are. VHF AIR. Generally speaking, Childrens does transferes from hospital to hospital NOT evacs from accident sites. Most of the Acadian activity is "on site" landings at accident sites.. Childrens does pickups at hospitals that cannot or are not equipped to do neonatal or pediatric issues. The pilots still use VHF AIR for air traffic control.