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A linear amplifier is an electronic circuit whose output is proportional to its input, but capable of delivering more power into a load. The term usually refers to a type of radio-frequency (RF) power amplifier , some of which have output power measured in kilowatts , and are used in amateur radio .
K.W. Electronics was a British manufacturer of amateur radio equipment founded in the mid-1950s by the ... KW 600 linear amplifier [9] KW 1000 linear amplifier [10 ...
Improved models of the two transceivers were periodically introduced well into the 1970s along with accessories, including a remote VFO (for separate control of receiver and transmitter frequency) and the Mark-I and Mark-II linear amplifiers. Magazine ad circa 1970s featuring Swan 600T/600R
The company was founded in 1943 by radio design engineer Robert L. Drake. The company began as a manufacturer of low pass and high pass filters for the government and amateur radio market, and after World War II, produced amateur radio transmitters and receivers and communications receivers for maritime mobile service.
A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter , their output driving the antenna .
Oscillator and a mixer. Used in ham radio applications. [6] Operational amplifier: DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. [7] Telefunken U401B: Yes High quality High Com analogue compander for audio in the 1970s. Telefunken U401BG: Telefunken U401B: Yes
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