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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... heard this from all of them: “Dad, are you still working on that book?” All errors and decisions about material are my own, and I take full responsibility for everything appearing in this book. Tallahassee, Florida March ¡3, 2007 ...
... heard by a young Soviet farmer-amateur near Archangel, who conveyed the information to the authorities. Nobile and those still on the ice flow were saved. In February ¡925, American media was focused on a Kentucky cavern several miles ...
... heard his short test. No answering call was heard but tuning the receiver dial a CQ was coming through signing the call VK7HL. (CQ is the general call universally used by ham operators seeking a contact.) Forrest knew that “VK” calls ...
... heard the three dots: one at ¡2:30 p.m. and again at ¡:¡0 p.m. Marconi's achievement, his lawyer said, “marks a new era in the history of the world.” The tone of the Times article left little doubt that the editors agreed.2 This was ...
... heard in a receiver demanded hours of concentration, and to send the code was a further challenge. Defying these obstacles, a few amateurs were on the air by ¡90¡. Their technology improved and their numbers increased steadily. Yet it ...
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 |