differential keying

differential keying

[‚dif·ə′ren·chəl ′kē·iŋ]
(electronics)
Method for obtaining chirp-free break-in keying of continuous wave transmitters by using circuitry that arranges to have the oscillator turn on fast before the keyed amplifier stage can pass any signal, and turn off fast after the keyed amplifier stage has cut off.
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