Anybody have info about this? ca 1980 in radio room of a boat on Yangtze River I saw book with 26 pg of 26 columns & 26 rows — all lettered A to Z. Each square had Chinese symbol for, say, “The temperature is …” Thus a 3-character code could send or inquire about 17,576 items. 73 de Irv KK5QQ
Sent from Irv’s iPhone
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