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KEYED-OSCILLATOR TRANSMITTER: A transmitter in which one stage is used to produce the rf
pulse.
KILO: A prefix meaning 103 (times one thousand). i.e., kilohertz.
KLYSTRON AMPLIFIER: An electron beam device which achieves amplification by the conversion of periodic velocity variations into conduction-current modulation in a field-free drift region. Velocity variations are launched by the interaction of an RF signal in an input resonant cavity and are coupled out through an RF output cavity. Several variations including reflex and multi cavity klystrons are used. Listing of Amplifier Manufacturers
KLYSTRON, MULTICAVITY: An electron tube which employs velocity modulation to generate or amplify
electromagnetic energy in the microwave region. Since velocity modulation employs transit time of the electron to aid in the bunching of electrons, transient time is not a deterrent to high frequency operations as is the case in conventional electron
tubes. See also Velocity Modulation.
KLYSTRON, REFLEX: A klystron which employs a reflector (repeller) electrode in place of a second resonant
cavity to redirect the velocity-modulated electrons through the resonant cavity. The repeller causes one resonant circuit to
serve as both input and output, which simplifies the tuning operation. This type of klystron is well adapted for use as an
oscillator because the frequency is easily controlled by varying the position of the repeller. See also Velocity Modulation.
KLYSTRON POWER AMPLIFIER: Multicavity microwave electron tube that uses velocity
modulation.
