“This picture appeared in an RCA advertisement in Life magazine 80 years ago today, September 5, 1938. It shows NBC engineers Marvyn Adams and W.R. Brown along with NBC announcer George Hicks broadcasting live from Canton Island (sometimes spelled Kanton) in the South Pacific. They were on the island as part of a joint expedition by the U.S. Navy and the National Geographic Society for the solar eclipse of June 8, 1937. The NBC eclipse coverage was transmitted from this ‘ultra-high frequency transmitter’ to the USS Avocet anchored at the island, and from there to the RCA station at Point Reyes, California, where it went by wire to the NBC Blue Network.”
From onetuberadio.com/2018/09/05/10180/.