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Will the Earth be able to communicate with other Planets?
London, 28 January 1920. In an interview granted to an editor of “Daily Mail”, Guglielmo Marconi asserts that - the radiotelegraph stations often receive radio signals of which nobody until now it is successful to discover the origin. They are signals surely sent from great distance and outside of the terrestrial atmospheric zone because they are at the same time picked up by distant radiotelegraph stations, like London or New York. It has not been possible, - Guglielmo Marconi says - to decipher some comprehensible message even if it uses a kind of Morse alphabet that are repeated many times. Marconi says that the scientific investigations over the origin of the signals are continuing and that it cannot give some reliable explanation of the phenomenon but not escude that these radio signals can come from other planets or from the sun. The Daily mail closes the interview to Marconi and it wonders if we do not find ourselves already at the best of the greatest discovery that mankind can make: to enter in communication with people of other planets.
Originally posted by Bordon81
reply to post by pikestaff
The neutral Hydrogen line has a white enough signature that it makes a good carrier. Both Tesla and HG Wells wrote about signals from Mars. That would require a high frequency above 1400 MHZ to allow a narrow focused beam.