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Around 1:00 a.m. on 26 November 1923, Charles York had been handling routine message traffic at his station 7HG in Tacoma, Washington, when he heard a pure CW station calling him on 200 meters signing JUPU.1 They made contact easily at first. The JUPU operator, an American, gave him a message for his mother in Cambridge, Illinois, and said he was located in Tokyo. But the contact was lost before York could get the street address in Cambridge, find out … Continue reading