While serving as the on‑location cinematographer for the 1933 production of Eskimo, Clyde De Vinna — already known as an avid ham radio operator and former army radio man — spent eleven months in the Alaskan field keeping the remote shoot in touch with base camp by short‑wave radio. On one bitter night he worked inside a small, tightly sealed shack that had been made air‑tight against the cold and relied on a gasoline heater. De Vinna was overcome by carbon monoxide fumes from that heater; as he dozed or collapsed his telegraph-style keystrokes faltered. A ham operator half a world away in New Zealand noticed the interrupted signal, realized something was wrong and set off a relay sequence: the New Zealand operator alerted a ham in Hawaii, who in turn contacted operators in Alaska. That relay brought immediate aid to De Vinna and likely averted a fatality. The incident not only underlined the perilous conditions crews endured on remote location shoots of the era, it also became part of De Vinna’s personal legend — so much so that MGM later dramatized his radio exploits in the 1939 Pete Smith short Radio Hams, which presented the cinematographer’s global radio adventures to theater audiences.
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