The World of Ham Radio, 1901-1950: A Social HistoryMcFarland, 28.01.2015 - 292 Seiten During the first fifty years of the twentieth century, ham radio went from being an experiment to virtually an art form. Because of the few government restrictions and the low monetary investment required, the concept of ham radio appealed to various people. More than just a simple hobby, however, ham radio required its operators to understand radio theory, be able to trace a schematic and know how to build a transmitter and receiver with whatever material they might have available. With the advent of World War II and the increased need for cutting-edge communications, the United States government drew upon the knowledge and skill of these amateur ham radio operators. This book explores the history of ham radio operators, emphasizing their social history and their many contributions to the technological development of worldwide communications. It traces the concept of relays, including the American Radio Relay League, from contacts as close as 25 miles apart to operators anywhere in the world. The book highlights the part played by ham radio in many of the headline events of the half century, especially exploration and aviation "firsts". The ways in which these primarily amateur operators assisted in times of disaster including such events as the sinking of the Titanic and the 1937 Ohio River flood, are also examined. |
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... hundreds of young people, as well as a good many adults, began experimenting with the possibility. The United States, however, was particularly receptive to the wireless enthusiast. Its population at the turn of the last century was ...
... hundred times greater than that of the ordinary station.” (Marconi had been experimenting in England for several years.) Via transatlantic cable he had calibrated the time when the Poldhu station was to send signals: from 3:00 p.m. ...
... hundreds of inventions for radio were patented and, sadly, many resulted in infringement lawsuits, some of them bitterly contested well into mid-century. A good measure of the interest in wireless telegraphy—the word “radio” does not ...
... hundred-fold more engrossing than 'electricity.' With one voice they asked, 'How does he [Marconi] do it?' and with one purpose of mind they proceeded to find out for themselves.”7 The experimenter in small-town Ohio or Colorado, or ...
... hundred fifty miles from New York City.19 Captain Sealby called the crew to quarters and had the collision bulkheads closed, shutting o› the engine room. Then he contacted John M. (Jack) Binns, the Marconi operator. Binns made his way ...
Inhalt
1 | |
5 | |
2 Hiram Percy Maxim and the Relay Concept | 24 |
3 Amateurs During the First World War | 40 |
4 Amateurs Between War and Peace | 53 |
5 Surviving the Broadcast Revolution | 64 |
6 Relays DXing Strange Languages and Clubs | 80 |
7 Amateurs as Experimenters and Adventurers | 101 |
Phase Two | 169 |
Amateurs in Emergencies and Disasters | 181 |
19401945 | 200 |
19411950 | 211 |
Epilogue | 231 |
Appendix A Morse Code Alphabet | 237 |
Appendix B Q Signals and Other Abbreviations | 238 |
Appendix C Common Abbreviations in Amateur Morse Code | 240 |
8 The Olympics Worlds Fairs Trans Radio Press Service and
International Radio Conferences ... | 116 |
9 Adventurous Amateurs at Sea and in the Air | 130 |
The NC4 Byrd the Dolebirds the Lindberghs and Others | 140 |
Phase One | 154 |
Chapter Notes | 241 |
A Bibliographic Essay | 261 |
Index | 273 |
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The World of Ham Radio, 1901-1950: A Social History Richard A. Bartlett Keine Leseprobe verfügbar - 2015 |