Shortwave

Low-Tech Espionage:The Real “Mr. and Mrs. Smith” – Big Think

Chief Editor July 3, 2010 0 9 sec read
Low-Tech Espionage:The Real “Mr. and Mrs. Smith”Big ThinkRadiograms are coded messages similar in structure to telegrams except that they are sent and received over shortwave radio. Shortwave radios can be bought …


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