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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... messages was common practice when an unusual word appeared, and a repeat of the word would be given.) When the coded conversation ended, seventeen-year-old Forrest Bartlett, W9FYK, sat back in the old chair and relaxed. He had achieved ...
... messages for passengers, ship to ship, as well as ship to shore. These Marconigrams were often sent by the ship's wireless operators to seaboard telegraphers who then relayed the messages via telegraph to the specified addresses. As ...
... messages from other ships, including information telling of ice fields at various latitudes and longitudes along the route; these were conveyed to the proper ships' o‡cials. First class passengers kept Phillips and Bride busy sending ...
... messages of passengers safe or missing, even after the ship had anchored in New York harbor. Marconi, in New York City at the time, decided to go to the Carpathia and see the young Marconiman. He made his way up a long stairway and ...
... messages to go,” and the boy saw Mr. Marconi's face and his hand extended.”24 Twenty-year-old Cecil Evans, the operator on the Californian, which was. “Carried ashore with feet crushed and frostbitten, Mr. Harold Bride ... leaving the ...
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 |