Reader's Guide to the McGraw-Hill Encyclopedia of Science and Technology

Reader's Guide to the McGraw-Hill Encyclopedia of Science and Technology

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Shortly after World War I, experiments in transmission on radio frequencies between about 4000 and 20, 000 kHz proved that communication ... Shortwave use grew slightly, but almost all overseas communication was still carried by cable. ... It was obvious during the early 1960s that the artificial satellite communications concept could be expanded so that a moon, or a satellite, ... RCA, GE, and GTaamp;E.


Title:Reader's Guide to the McGraw-Hill Encyclopedia of Science and Technology
Author:
Publisher: - 1971
ISBN-13:

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