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Updated: May 12, 2025
Obviously, the only animals that bite our human species with sufficient frequency and regularity to act as transmitters of such a common disease are those Ishmaelites of the animal world, the insects.
You are trying to go from almost the Age of Bronze clear up to year-after-next in a month or two. Not one man in a million could have done as much in his lifetime as you have done in the last few weeks, and I do not see how even you, with what little you have to work with, can possibly build such things as power-plants, transmitters, and ultra-radio stations. But what of it?
In the wireless telephone transmitters for long distance work which were shown and described in the preceding chapter a battery is used to energize the microphone transmitter, and these two elements are connected in series with a microphone modulator.
On the flashing, all-out run to Luscious, subspace all the way, with the Commissioner and Quillan spelling each other around the clock at the controls, the transmitters clattering for attention every half hour, the ship's housekeeping had to be handled, and somebody besides Mantelish needed to keep a moderately beady eye on the Ermetyne, she hadn't even thought of acting on Pilch's suggestion.
At that time 20 metres covered 14,000 to 14,400 KHz., and the 15 metre band had not been allocated to the amateur service. In September 1939 Hitler invaded Poland and all of us hastily and voluntarily dismantled our transmitters and scattered the components, as there was nobody to order us to close down.
As it is far easier to keep the oscillations going with a vacuum tube than it is with an arc the former means has all but supplanted the latter for wireless telephone transmitters. The apparatus required and the connections used for wireless telephone sets will be described in later chapters. Useful Information.
As the magnetic modulator does the same thing a vacuum tube used as a modulator is not needed where the former is employed. For this reason a magnetic modulator is the cheapest in the long run. The Operation of Wireless Telephone Transmitters with Alternating Current.
The transmitter was of French manufacture and consisted of two enormous triodes in a Hartley oscillator circuit. When I got it to work it was installed at the Naval Wireless station at Votanikos, where the Director, Captain Kyriakos Pezopoulos used it for experimental transmissions. There were already two other transmitters there, one on Long Waves and one on 600 metres.
Those who possess them are transmitters of such heavenly messages; they issue from them as rivers pour from undiminished mountain streams. Does the world's sin and pain and weakness come and empty itself into the broad current of these devout lives? Then their fearless onsweeping forces gather it all up, carry it on, cleanse and purify it in the process.
This device is built on exactly the same principle as the telephone induction coil just described but it is more effective because it is designed especially for modulating the oscillations set up by vacuum tube transmitters. As with the telephone induction coil, the microphone transmitter is connected in series with the primary coil and a 6 volt dry or storage battery.
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