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RADIO BROADCAST
pressing up against the copper cylinder and then separated by a quarter of an inch or so to form the arc. Current for the ten arcs, all connected in series, was supplied by a 550volt motor-generator set. Then there were three meters, indicating the conditions in various circuits. The first part of the programme consisted in taming the ten arcs until the meters stopped their mad antics and their
their characteristic thoroughness and fine workmanship, made the microphone in the form of simple cartridges which fitted into a holder at the small end of a long but narrow cardboard horn. Each microphone did not last much longer than five minutes, after which it was little more than plain junk. While the writer never knew the exact cost of these microphone cartridges, they could hardly have
CONVALESCING TO THE STRAINS OF RADIO MUSIC
© Kailel & Ilcrhert
needles or hands, whichever you wish to call them, came to a genteel repose.
A large megaphone mounted on the rear board of the transmitting set was the mouthpiece. One didn't talk, however; one simply shouted. There was little to say, because if we were heard at the receiving end, it was more of a miracle than anything else. So we simply shouted numbers into the huge horn — "One, two, three, four," and so on, followed by "Fort Wood, Fort Wood, how do you get me now? One, two, three, four," and so on again and again, until the meters dropped their dignity and began cutting up once more.
The microphone, or the instrument which transforms sounds into modifications of an electric current, was a renewable affair. The German builders of the equipment, with all
cost less than ^2.00 each. Imagine wasting a $2.00 microphone for every five minutes of uncertain telephonic communication, not to mention the time lost in changing microphones!
A STUDY IN DEDUCTION
WHAT of the results? Absolutely impossible! In all the long months of untiring efi^ort to work over the short eighteenmile span 'between the stations, the voice and the phonographic music only got through a half dozen times, and then only for a few moments, so that odd bits of conversation or music were heard by the Signal Corps officers gathered at their receiving end. Even in those days the phonograph was employed for radio telephony.
But all the while certain stock promoters