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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... radio with the most mind-boggling (for the time) achievement of all: Guglielmo Marconi's hearing of the Morse code letter “s” (dit dit dit) at his station on the fog-shrouded, storm-swept Signal Hill at St. Johns ... Ham Radio, ¡90¡–¡950.
... ham was ready to test his rig.9 It took the minds of bright people to understand the schematics and accompanying plans in instruction books, journals, or even in the kits almost immediately sold by wireless ... Ham Radio, ¡90¡–¡950.
... ham radios.) The prospectuses of some companies described in glowing terms the profits anticipated by sales of their products. Others set up as service companies, with land stations contacting ships with rigs ... Ham Radio, ¡90¡–¡950.
... 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.
... radio stopped working. Then both men searched for a way to safety. Only Bride survived, first by swimming to a collapsible boat, then boarding one of the crowded lifeboats. Survivors sat on his legs, which were ... Ham Radio, ¡90¡–¡950.
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 |