The World of Ham Radio, 1901-1950: A Social HistoryMcFarland, 2007 - 281 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 considerable knowledge and skill of these amateur ham radio operators, validating the fact that ham radio was here to stay. 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 work also discusses the various technological advances of the twentieth century and the effects which this had on the ever-changing world of the ham radio operator. 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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Ergebnisse 1-3 von 63
Seite 5
... transmitter and receiver . To the left of them was a window from which his antenna and ground wires , protected by insulators , entered the room . The boy turned on his rig . It was crude . The transmitter and receiver were both ...
... transmitter and receiver . To the left of them was a window from which his antenna and ground wires , protected by insulators , entered the room . The boy turned on his rig . It was crude . The transmitter and receiver were both ...
Seite 101
... transmitter and receiver in between , he or she saw reason to experiment . Some of their early experiments are amusing , yet they reveal serious thought , an urge to improve , and delight should the experiment work . More adventurous ...
... transmitter and receiver in between , he or she saw reason to experiment . Some of their early experiments are amusing , yet they reveal serious thought , an urge to improve , and delight should the experiment work . More adventurous ...
Seite 106
... transmitter and receiver he designed a single carrying case , assembled spare parts , built a portable mast , and hung an extra storage battery beneath the rear floorboards with switches " for throw- ing both batteries on charge or in ...
... transmitter and receiver he designed a single carrying case , assembled spare parts , built a portable mast , and hung an extra storage battery beneath the rear floorboards with switches " for throw- ing both batteries on charge or in ...
Inhalt
Acknowledgments vii | 1 |
Hiram Percy Maxim and the Relay Concept | 24 |
Amateurs During the First World War | 40 |
Urheberrecht | |
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Andere Ausgaben - Alle anzeigen
The World of Ham Radio, 1901äóñ1950: A Social History Richard A. Bartlett Eingeschränkte Leseprobe - 2013 |
The World of Ham Radio, 1901-1950: A Social History Richard A. Bartlett Keine Leseprobe verfügbar - 2015 |
Häufige Begriffe und Wortgruppen
activities amateur radio American Anne Morrow Lindbergh Antarctica antenna April Arctic army ARRL August batteries Bowdoin broadcast Byrd call letters Captain City Clinton coast commercial December DeSoto disaster editorial emergency engine equipment expedition exploration February flight flood Forrest Bartlett ham radio Hamfest heard Hiram Maxim Hiram Percy Maxim hundred hurricane Ibid involved Island January July June K.B. Warner league license listening MacMillan March Marconi Mawson messages meters miles Morse code National Naval navy newspapers night North November October officials Pitcairn Pitcairn Island plane Point Barrow Pole portable Radio Club Radio Conference radio operators radio stations radiomen Red Cross regulations relay reported Sayville sending sent September ship shortwave radio shortwave set signal corps story telegraph teurs tion transmitter and receiver Tuckerton United vacuum tube Washington wave WERS Wilkins wire wireless wrote York young