Abstract: A mercury delay line memory system for electronic computers, capable of operating at pulse repetition rates of several megacycles per second, has been developed. The high repetition rate ...

Abstract: MOBILE radio equipment manufactured in the period from 1946 to 1950 was designed for a 120-kc channel allocation in the 40-megacycle (mc) band. The receivers used with these systems had poor ...

Anderson at Harvard in 1937, the toothed wheel was replaced by a modulated Kerr cell, and the frequency varied in the one case from 3 to 7 megacycles per second, and in the other case from 7 to 56 ...

It marked a historic occasion. The message had come all the way from Cedar Rapids, Iowa on ultra high frequency waves (418 megacycles) which do not normally travel beyond the horizon. It arrived ...

But the most remarkable thing about them is the radio energy they emit: it is strongest at about 900 megacycles. This frequency, says Kardashev, is the best for longdistance space communication.

The 1949 ticket noted the FM broadcasting station was an all school project with tickets costing $1 each for the chance to be on hand for the first show broadcast at 89.3 megacycles from a 10-watt ...