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Surely there must be many openings in so large a field for bright and ambitious young fellows, and in their dreams that night the boys had visions of fame and fortune attained through the medium of wireless telephony.
The last one hundred and twenty-five years have seen the invention of the locomotive, the steamship, the telegraph, the sewing machine, the camera, the telephone, the gasoline engine, wireless telegraphy and telephony, and the many other applications of electricity.
In a few moments three tuneful whistlers were making their way homeward, with hearts elated at the success of their first venture into the wide field of radio telephony. For several days nothing of special interest happened in Clintonia. Buck Looker made his appearance about the streets, one eye covered by a black patch.
In fact, since Marconi's work there has been no diminution in the number or amount of cables laid and the business handled, nor is there prospect of such for years to come. While the cable has answered admirably for telegraphic purposes yet for telephony over considerable distances it has failed entirely so that wireless telephony over oceans starts with a more than favorable outlook.
The receptor for wireless telegraphy and telephony is the same and may include either a crystal detector or a vacuum tube detector, as will be explained presently. The Easiest Way to Start.
American youths to-day are given, if of a mechanical turn of mind, to amateur telegraphy or telephony, but seldom, if ever, have to make any part of the system constructed. In Edison's boyish days it was quite different, and telegraphic supplies were hard to obtain. But he and his "chum" had a line between their homes, built of common stove-pipe wire.
Where an initial alternating current is used for wireless telephony, the current must be rectified first and then smoothed out before passing into the oscillator tube to be converted into oscillations.
As George Ade has said, "Anything attached to a wall is liable to be a telephone in Paris." And so, what with poor equipment and red tape, the French system became what it remains to-day, the most conspicuous example of what NOT to do in telephony. There are barely as many telephones in the whole of France as ought normally to be in the city of Paris.
In early experiments with radio telephony it was found that the chief difficulty lay in obtaining a current of sufficiently high frequency to transmit the human voice, the currents used in wireless telephony being much too weak for this purpose. "I had, therefore, to invent my own alternator, which is attached to that gasoline motor.
"He is the only man," says Morgan, "who can raise twenty millions in twenty minutes." The Perkins plan of rapid transit telephony is to prepare a list of names, from ten to thirty, and to flash from one to another as fast as the operator can ring them up. Recently one of the other members of the Morgan bank proposed to enlarge its telephone equipment.
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