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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... ships' o‡cers, the possibilities held out by “wireless telegraphy” was as electrifying as the concept itself. A wireless aboard ship, in contact with other ships and with land stations, could determine the vessel's exact location, be in ...
... ship's newspaper, or posted for passenger's information. So new was the technology that any out-of-the-ordinary incidents involving the use of wireless made headlines. When a man named Crippen murdered his wife in England and took ...
... ships with rigs likewise installed and serviced by the company. There were many failures, and more than a few cases of stock jobbing. Lee de Forest with a man named White were deeply involved in one of these “fast buck” schemes. An ...
... ships.” Then, suddenly, he hears the letters CQD. CQ stood for “all ships” and D for “distress” (although as a colloquialism it meant “Come Quick, Danger”). Then followed in code the message: “We were struck by an unknown boat: engine ...
... radio shack in a steamship (this is not the Titanic) (courtesy The IIIustrated London News, April 20, 1912, p. 589). ships, his most important connection was with the Siasconsett land. 16 The World of Ham Radio, 1901–1950.
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 |