Science: Air-Wave Battle

From a quiet office in Manhattan, Engineer George Q. Herrick, of the Voice of America, was fighting a furious electronic battle last week for Russia's radio audience. His weapons were powerful transmitters spotted through the northern hemisphere. His projectiles were radio waves. Herrick chalked up a victory whenever the Voice's broadcasts broke through Soviet jamming to reach Russian ears.

Soviet transmitters began jamming the Voice's Russian-language programs in February 1948. They were not too successful then, but last month a mighty barrage of jamming broke out. It practically obliterated the Russian-language programs of...

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