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  • 1954 Boy First Book Of Radio Electronics Morgan Pdf Files
    카테고리 없음 2020. 3. 16. 11:18

    Morgan page - -Alfred P. Morgan page - 8/26/2007 Updates: 12/3/2016:The American Radio History site now has several scans of Mr. Morgan's radio books, see thefor pdf files.Click on the thumbnail to the left for the 1940 Census page for Mr. Morgan and his family.

    Starting on line 59 it lists Mr. Morgan, his wife, three sons andhis brother in law - sounds like a modern day sitcom, except that in this case the Dad was smart! The family lived at 69 Brookfield Road in Upper Montclair, New Jersey. Morgan was 50 years old in1940.older entries:Here is an entry from the book: More Junior Authors, ed. By Muriel Fuller, 1963Alfred P. Morgan1889-AUTHOR AND ILLUSTRATOR OF:The Boy Electrician; A Pet Book for Boys and Girls; A First Electrical Book for Boys; The Boys' First Book of Radio and Electronics; Etc.Autobiographical sketch of Alfred Powell Morgan:I was born in Brooklyn, New York, before it became part of New York City. Some of the streetcars were drawn by horses and there were no automobiles.

    Streets paved with cobblestones and vacant lots were the children's playgrounds in those days. My father owned a glass factory and it was fun to visit there and watch the men blowing lamp chimneys and bottles. The factory was near Erie Basin and I watched many famous ships go into drydock for repairs, including' several of the United States men-of-war which fought in the Spanish-American War.When I was eight years old my family moved to Upper Montclair, New Jersey, a suburban country village. Here a boy's activities were very different from those in the city and very different from what they are today. There were ponds and a canal near by which provided swimming, fishing and skating.

    Some boys hunted rabbits, squirrels and ducks with air rifles or twentytwo caliber rifles.I was very much interested in science but there were no books for young people about chemistry, electricity, etc. I tried to read and understand grown-up people's books about engineering and science and decided that when I grew older I would write books which young people could understand. In my search for information I visited many famous scientists and engineers and asked them questions, among them Thomas A.

    Edison, Nikola Tesla and Santos-Dumont.I graduated from the Montclair High School and taught physics and chemistry as a paid student instructor while I was still a senior at high school. I attended the Massachusetts Institute of Technology.

    I started writing books and magazine articles while at college in order to earn money.I have written more than fifty books and a couple of hundred magazine articles. Anelectrical book for boys written nearly fifty years ago still sells well. Writing was not my only activity after leaving college. For many years I also manufactured electronic and electrical equipment. When I am not writing or illustrating my books, I enjoy raising flowers in the back yard, and week ends on my small cruiser.My wife was Ruth W.

    Shackleford and we have three sons, now grown up and married. One is a doctor, one a salesman, and the third an officer in the United States Air Force.addition: 10/1/2007The following is the introduction: Off the Recordfrom First Radio Book for Boys by Alfred P. MorganMore years ago than I care to remember, while I was still a boy in grammar-school, Ibecame intensely interested in a new wonder, a scientific infant then known as wirelesstelegraphy.

    To be exact, it was in 1903. This was only two years after a young scientistnamed Guglielmo Marconi had astonished the world by sending telegraph signals acrossthe Atlantic Ocean between Wales and Nova Scotia without any interconnecting wire orcable. My interest in the new art was awakened principally by reading articles about itin The Scientific American.By reading and experimenting, I gleaned enough information to build my ownwireless telegraph set.

    1954 Boy First Book Of Radio Electronics Morgan Pdf Files

    With two binding posts, two brass rods, a glass tube, and somefilings from the edge of a dime, I made a 'coherer.' From an old electric door-bell Imade a 'tapper.' An old telephone bell was changed into a sensitive 'relay.' These threeinstruments, properly connected and adjusted, composed the receiver. A telegraph key,a 'jump-spark coil,' and a spark gap made up the transmitter. The spark gap consistedof two pieces of brass rod with the ends separated about 1/32 of an inch. The 'jumpspark coil' was an old telephone induction coil which I fitted with an interrupter and acondenser.

    It produced a short, hot spark which jumped about 3/32 of an inch, and was Iproud of it! This may seem a collection of rough and crude apparatus, but it embodiedthe same principles utilized in some of the commercial equipment in use at that time.The battery, too, was home-made.

    Four carbon rods and four zinc rods suspended infruit jars containing a mixture of sulpburic acid, bichromate of potash and water,generated current for the coil. I had a great deal of trouble with my parents over thisbattery-wherever a drop of the terrific liquid contained in the jars fell on rug or clothing,it ate a hole. The coherer and spark coil were endured with suspicion, but the batterysoon became a distinct social outcast.However, my 'wireless” was a success. It worked, and I was happy.With it, I could send messages through space for 150 to 200 feet. Some people whosaw this crude and mysterious apparatus in operation were intelligently interested.Others were amazed and skeptical. Some thought it a fake, and still others consideredthat I was quite 'nutty' to fool with and believe in such a preposterous thing astelegraphing without wires.You will find that there are still these four different kinds of people in the world.Wireless telegraphy was developing rapidly in those days. Coherers were soonreplaced by microphonic 'detectors' which employed a telephone receiver and weremuch more sensitive.

    1954 Boy First Book Of Radio Electronics Morgan Pdf Files

    So I built several kinds of microphonic detectors. I learned howto build an 'electrolytic detector during a visit to the wireless telegraph station, calledPT, at the Brooklyn Navy Yard.I hurried home from that visit and set to work. First, I rewound a telephone receiverwith fine wire (No.

    40 B.S.) to make it more sensitive, and built a 'tuning coil' bywinding some wire on a piece of wooden curtain pole. Then, with some nitric acid andWollaston wire (silvercoated platinum wire.001 of an inch in diameter) purchasedfrom Eimer and Amend, I built an electrolytic detector.

    This was accomplished bybreaking a hole in an electric light bulb, poking out the filament and then partly fillingthe bulb with dilute nitric acid. A piece of Wollaston wire was attached to a fine screwand arranged so that the end dipped in the acid solution.I was extremely happy when I found that I could receive signals from the BrooklynNavy Yard at my home in Montclair, New Jersey, with this new equipment.At that time boys actively interested in wireless telegraphy probably numbered lessthan a baker's dozen. They were scattered about the country but were destined to growinto that intrepid band called 'hams and 'amateurs'-now nearly 100,000 strong.I visited the Children's Museum in Brooklyn, where an unusual young woman, MissMary Day Lee, a member of the Museum staff. Not only encouraged boys to experimentwith electricity and wireless telegraphy but actually was able to aid and assist them. Myhat is still off to the young woman who could discuss with you the fine points ofwinding a spark coil. There at the Museum I also met Austen M. Curtiss and LloydEspenschied, boys of my own age and two of Brooklyn's four known 'wirelessamateurs” at that time.Wireless telegraphy was growing and changing rapidly in those days.

    More and moreships were being equipped with apparatus and more land stations built.There was a United Wireless Telegraph Company station at 42 Broadway in NewYork City, a Marconi station at Sea Gate, near Coney Island, N. Crystal detectorsusing Carborundum or silicon replaced other less sensitive detectors. Variablecondensers for tuning came into use and with all this, a new crop of amateurs, equippednot only to receive but to crash and splutter every evening with transmitters consisting ofhome-made spark coils and transformers that no one could tune out. Each one tried tosee who could make the most noise. By this time there were many thousands ofamateurs scattered about this country.The growth of wireless telegraphy from this point on is a story too long to recite here.So we will skip to that time just before the World War when that marvelous devicecalled the three-element vacuum tube was coming into wide use. Wireless had grownup.

    It had become radio.But so had the amateurs grown up. Since the earliest days of wireless there hadexisted this earnest band of experimenters of varying capabilities.

    Some were amateursin the sense that wireless to them was only a hobby. They were attracted by the noveltyand interest of signahng to each other and cared little about scientific investigation. Onthe other hand, there were many who had a standard of knowledge equal to that ofprofessional radio men.During the war, the activities of the amateurs necessarily ceased. Many of them lenttheir knowledge and skill to their country.

    Some of the most able and proficientinstructors and operators in the Army and Navy were ex-amateurs.After the war, amateurs using very small power, by ingenuity, resource andperseverance, developed shortwave radio transmission and reception to such a degreethat it proved to be a far more dependable method of long-distance communicationthan the long waves used by conunercial companies. For many years, the professionalradio engineer neglected short waves only to have it shown to him that there was anunknown set of phenomena of extreme usefulness at his very door and that it had beenfirst found and developed by 'amateurs.' All these years, while radio was growing up, so was I. I became a manufacturer ofradio apparatus. I manufactured both amateur and commercial equipment, andapparatus for the United States Army and Navy.

    1954 Boy First Book Of Radio Electronics Morgan Pdf Files 2016

    I pioneered in broadcasting. But allthis time I still remained an amateur at heart, a 'kid' with a spark coil and a crystaldetector.I have never lost a sense of awe for radio science or a fellow-feeling with the ladwho likes to putter with antennae and oscillators. There are many scientific andengineering books about radio. There are many books for young men who want to 'geton the air' with a modem transmitter and communications receiver.

    But the lad who isa rank beginner, who wishes to build a crystal receiver and a one- or two-tube set hasbeen neglected. It is for him that I have written this book.- -Page accesses.

    1954 Boy First Book Of Radio Electronics Morgan Pdf Files Pdf

    Vintage Radio and Electronics. Boys Book of Crystal Sets                                 The Boys Book of Crystal SetsThis is a classic book which had many reprints in the 1950's through the 1960's.Full constructional notes to build Twelve Crystal Radio sets are given most using home wound coils. The Germanium diode is still obtainable as are all the other components.Below are shown the circuits for each of twelve sets and if you want other details a link to a Pdf file is given so that you can download the details.Thanks to Neil Springate for supplying the file.Twelve Crystal Set CircuitsLast updated 26.8.200 © Maurice Woodhead.

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