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- W2289590928 abstract "The modern AM transmitter has an evolutionary path back to the first transmitters of the early 1920s, with a few revolutionary developments along the way. There are four distinct phases of development: the quest for higher power (up to 1939), the first post-war phase (1948-1958), the second post-war phase (1959-1979) and the quest for higher conversion efficiency (1979 onwards). In each phase the transmitting tube played a vital role. The tube is the most vital component in a transmitter, and up to the 1960s it was the limiting factor in the generation of very large amounts of RF power. Today, tube development has reached a stage where the voltage stresses and RF current densities produced in the final output stage of a modern high-power SW transmitter impose tre mendous stresses on other components, notably the RF switches, the point contacts in the tuning mechanism of the final tank inductors and, perhaps most important of all, the high-vacuum variable capacitors." @default.
- W2289590928 created "2016-06-24" @default.
- W2289590928 creator A5064697904 @default.
- W2289590928 date "2011-10-06" @default.
- W2289590928 modified "2023-09-23" @default.
- W2289590928 title "Technology of the high-power transmitter" @default.
- W2289590928 doi "https://doi.org/10.1049/pbht019e_ch20" @default.
- W2289590928 hasPublicationYear "2011" @default.
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