Wireless

“ Here, in the depths, is woven that mysterious power that carries the wireless message through the rocks of the mountains and the channels of the sea, and wraps the earth in a diaphanous garb that makes the wireless telephone a possibility. ”

“ FIG. 153.—The aerial system of a transatlantic station.
The wireless telephone enables a passenger on board ship to communicate direct with his home by relaying the message over the line wires. By the same means the captain of a ship can call his home office and communicate with the owner of the vessel.
Telegraphs and telephones are the nerves of the world, carrying swift messages from its brain centers to its hands, annihilating distance in thought. All differences between men as individuals and people as nations can be traced to the lack of close contact. ”

“ This little salvage from the wreck has earned me the title of "Father of the Wireless" from many well-disposed fellow workers, rather than the invention of scores of appliances which have brought wireless transmission within the reach of every young amateur and which, in a time not distant, will lead to undertakings overshadowing in magnitude and importance all past achievements of the engineer. ”

“ Henry’s eyes shone bright as he looked about the small wireless room. There was a broad, desk-like shelf that stretched from side to side of the little room, and on this, and on the walls about him, were fastened a dazzling array of wireless instruments.
“Gee!” exclaimed Henry. “What a peach of an outfit!”
“It ought to be,” said the chief electrician with a smile. “It’s right up-to-date, and it cost Uncle Sam ten thousand dollars. Know anything about wireless?”
“A little,” said Henry. “I served as a substitute operator at the government station at Frankfort for a time.” ”

“ Meanwhile, the radio amateur to whom this book is addressed may have his share in the joys of wireless. To get all of these good things out of the ether one does not need a rod or a gun--only a copper wire made fast at either end and a receiving set of some kind. If you are a sheer beginner, then you must be very careful in buying your apparatus, for since the great wave of popularity has washed wireless into the hearts of the people, numerous companies have sprung up and some of these are selling the veriest kinds of junk. ”

“ The world has yet to learn what it owes to wireless. Little does it dream of its aid to commerce in every quarter of the globe; how much of the news it reads at its breakfast-table had been flashed through the ether for thousands of miles, or how every hour it outstrips the choked-up and behind-the-times submarine cable system.
Geoffrey Falconer was very sorely puzzled. ”

“ The whole principle of the wireless telephone is based on the fact that sound can be transformed into electricity and then can be transformed back into sound again. I know," he said, with a smile, "that that sounds very much like saying that you can make eggs into an omelet and then get the omelet back into separate eggs again"—here there was an audible snicker from the boys—"but that is very much like what is done by the wireless, although it doesn't exactly fit the case. ”

“ As a result of exhaustive researches, too extensive to describe here, it has been ascertained that the function of the wireless telephone is not to do away with the use of wires, but rather to be employed in situations where wires are not available or practicable, such as between ship and ship, and ship and shore, and across large bodies of water. The ether is a universal conductor for wireless telephone and telegraph impulses and must be used in common by all who wish to employ those agencies of communication. ”

“ I don’t know who started the wireless game in Montclair, but I do know that it was a long time after I was exposed to the wireless germ that it took and I was interested enough to listen in to the news that was flashed out by ship and shore stations. Nearly all fellows begin wireless by seeing some of their pals monkeying with the apparatus, and no wonder, for wireless has a kind of fascination about it that makes a deep appeal to not only boys but men. ”

“ Nearly all the big wireless companies have great stations fitted with powerful telephone transmitters and at given hours of the day and night they send out songs by popular singers, dance music by jazz orchestras, fashion talks by and for the ladies, agricultural reports, government weather forecasts and other interesting features. Then by simply shifting the slide on your tuning coil you can often tune-in someone who is sending Morse, that is, messages in the dot and dash code, or, perhaps a friend who has a wireless telephone transmitter and is talking. ”

“ The apparatus used as developed by the engineers of the Bell system was in a measure an outgrowth of their work with the long-distance telephone. Wireless telephony, despite the wonders it has already accomplished, is still in its infancy. With more perfect apparatus and the knowledge that comes with experience we may expect that speech will girdle the earth.
It is natural that one should wonder whether the wireless telephone is destined to displace our present apparatus. ”

“ In such a sense many of the most common modern conveniences of life would have seemed impossible a century ago. To travel with safety sixty miles an hour, to talk through the telephone with a friend an hundred miles away, to receive intelligible messages across the Atlantic by a cable, and, still more, to communicate by wireless telegraphy would have seemed impossible until recently. ”

“ Since 1903, wireless has made possible the radio, the wireless telephone, and now television. Is it not probable that the future holds other great marvels, one day to become commonplace-perhaps in God's Kingdom! ”

“ That is why any wireless receiving station, within a certain radius, can catch any messages that may be flying through the air--that is unless certain apparatus is tuned, or adjusted, to prevent this."
"Well, once the impulses, or electric currents, are sent out into space, all that is necessary to do is to break, or interrupt them at certain intervals, to make dots, dashes and spaces. These make corresponding clicks in the telephone receiver which the operator at the receiving station wears on his ear. ”

“ But if in future I must have a wireless telephone at my bedside I shall be no more isolated than I should have been had I remained at home. Pretty soon there will be no place under the sun where a man can go and get peace and quiet. The Maine woods will be full of radio outfits and the tops of distant mountains in touch with the stock market. Even an aeroplane carries its wireless. ”

“ Millions of messages going in all directions, crossing and recrossing one another, as is done every day by wire, are probably an impossibility by wireless telephony. Weird and little-understood conditions of the ether, static electricity, radio disturbances, make wireless work uncertain, and such a thing as twenty-four-hour service, seven days in the week, can probably never be guaranteed. In radio communication all must use a common medium, and as its use increases, so also do the difficulties. The privacy of the wire is also lacking with the wireless telephone. ”

“ Truly the science of radio-telegraphy has made rapid strides since the days of the “coherer,” until now, after the war, it is the most advanced in our human civilisation, and at the same time full of romance. Not a month passes but something new is discovered in that high-built, well-knit laboratory, where daily the keenest brains of wireless experimenters are at work devising, testing, and too often scrapping new instruments, new circuits, and new devices in order to improve and render less complicated both the ordinary wireless by Morse, and that modern marvel, the wireless telephone. ”

“ Wireless telegraphy is part of the established order of things. The wireless telephone is practical for limited distance, but is not a commercial rival of the telegraph. Great distances are claimed, but they are matters for proof and speculation.
There is no immediate possibility that wireless telephony will take the place of local exchanges. If the time ever does come that it in any way tends to supplant the line telephone for some uses, it is more than probable that each subscriber must have his own generating station and call up direct. ”

“ That’s the whole essence of the wireless—otherwise it is no different from common telegraphy—a group of parts each for individual service in transmitting or receiving the electric waves.”
“Thank you!” observed Ben drily. “How delightfully plain that all is! You rattle those scientific terms off good and spry, though.”
“So will you, as soon as you do what I’ve been doing,” asserted Tom.
“And what’s that?”
“Getting a glance at the real wireless outfit Mr. Edson is operating down at Sandy Point.”
“I heard of that,” nodded Ben.
“He’s a fine man,” said Tom enthusiastically. ”

“ Many of those who had followed wireless telegraphy from its beginnings and knew somewhat of the theory of how it worked, set up a hue and a cry that the signals he had received were sent by ships at sea, or else they were due to static, as we call it now, that is, little charges of atmospheric electricity which accumulates on the aerial wire and finally discharges through the detector into the ground and this makes a click in the head-phones that sounds like a dot. ”

“ Wireless telegraphy is possible because mankind has discovered instruments which act as electric ears or eyes, catching and recording vibrations that had hitherto remained undetected.
The earliest known form of wireless telegraphy is transmission of messages by light. A man on a hill lights a lamp or a fire. This represents his instrument for agitating the ether into waves, which proceed straight ahead with incredible velocity until they reach the receiver, the eye of a man watching at a point from which the light is visible. ”

“ Wireless telephones will not only transmit the speech more clearly and distinctly, but have the further advantages that the initial cost is very much lower than that of wire lines, the maintenance is almost nil in comparison, the depreciation is smaller, the number of employees required is less, and a break-down is limited to the inside of the station, where it could be quickly remedied by the substitution of a duplicate spare piece of apparatus. ”

“ Sound, the regular oscillation, and noise, the irregular oscillation, of the air, are really the beginning and end of wireless as it is known to the public to-day.
I would go further when thinking of the public. They do not want to sit with a telephone upon their heads, even if their ears may be improved thereby. They require to walk into a drawing-room, and having stood for a moment upon the mat, they must be able to cross the room, touch a button in a fretwork cabinet, and by the [Pg 15] movement of a lever be able to place themselves in touch with any part of the world. ”

“ The history of wireless telegraphy and telephony is a striking example of how it is possible for scientists laboring in the field of pure research and stimulated by accumulated knowledge and imagination to arrive at discoveries of the most vital importance. ”

“ Wireless telephony, like wireless telegraphy, but to an even greater extent, is peculiarly suited for the conveyance of marine intelligence. Wireless telephony occupies a unique position in this regard-no operator is required. The additional expense of an operator is an objection to the wireless telegraph in many cases, and forbids its installation. Anybody can operate the wireless telephone. It is also much quicker-words can be spoken more rapidly than they can be put into Morse signals and translated. ”

“ The aerial wire is precisely the same for either wireless telegraphy or wireless telephony. The transmitter of a wireless telegraph set generally uses a spark gap for setting up the electric oscillations, while usually for wireless telephony a vacuum tube is employed for this purpose. 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. ”

“ During some of the winter storms and blizzards, when miles of wires were down in all directions, wireless has been the sole means of communication in certain instances.
The process of sending a wireless message is very simple. The aerial switch is usually kept in such a position that the receiving instruments are connected to the ground and aerial so that the operator is always able to hear any one calling him. We will suppose for illustration that the land station at 42 Broadway, New York City, wishes to transmit a message to the steamer "Horatio Hall." ”

“ So when after Chapter V had been written Captain Morris found new and interesting information on the use of wireless telegraphy in aircraft in the days before the war, the whole of this difficult chapter had to be reopened for new patching. “In regard to wireless,” he wrote, “I am like a blind man who has never talked to painters employed to write a critique of a picture exhibition. It’s paralysing. The only escape is to keep on broad lines. Every one knows that wireless sends messages. ”

“ No such trouble can occur with wireless telegraphy, and if it becomes necessary to move a wireless station with great rapidity, as for instance on an unexpected advance of the enemy, it is an advantage to have no wire to bother about. ”