Radio: Wave Focus

To U. S. pioneers in the old West, there seemed to be land enough for everybody. So, too, to radio pioneers there seemed to be wave lengths enough for all comers. Firstcomers, who had their pick, staked out their claims on the easy frequencies, the most readily exploitable wave lengths. Ultrashort waves (frequencies of 30,000 kilocycles and higher) were the wasteland. It was known that they were reliably effective only as far as the horizon, a paltry range for services which sought to blanket the whole earth.

Now radiomen are trying to conquer radio's...

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