- A gradual and undesired change in the frequency of a signal, resulting in its departure from a set or intended value. This may occur, for example, in an oscillator or transmitter, and may be due, for instance, to temperature changes or aging of components. Also called frequency shift (1).
- synonym frequency shift
- A change in the frequency of a circuit, device, or piece of equipment, such as a transmitter or oscillator.
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