The mechanical frame and the deployable STEM antennas were made by the Special Products division of de Havilland Canada (DHC) in Downsview, Ontario, in a building which many years later (until 2012) housed the Canadian Air and Space Museum.
Den mekaniske ramme og de anvendelige STEM-antenner blev fremstillet af Special Products divisionen de Havilland Canada (DHC) i Downsview, Ontario, i en bygning, der mange år senere (indtil 2012) husede det canadiske luft- og rummuseum.