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Trace the evolution ofautomatic Morse code devicesfrom the early 1800s to today through this informative text and over1,100 photos. Beginning with an overview of telegraphy and early key history, fifteensections explore the equipment usedto sendmessages over long distances. Featured arecode readers, oscillators, Morse trainers, electronic keyers,single- and dual-lever paddles,portable paddles, automatic mechanical keys, accessories, andmore. Eachdevice is presented in text and images,somewithclassicadvertisements; this combination allows the readerto appreciate devicedevelopmentand better understand the thinking that went into the design. Paddle and keymaintenance and adjustment are also examined, as well ascomputer interfacing and use of the Internet. The book also includes the results of patent studies and historical research, with many new findings presented, making ita must-have for collectors, ham operators, or anyone interested in the history of these communication devices.
- Format: Inbunden
- ISBN: 9780764351310
- Språk: Engelska
- Antal sidor: 304
- Utgivningsdatum: 2017-04-28
- Förlag: Schiffer Publishing Ltd