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{{Unreferenced|date=December 2009}}
[[File:APCh2.svg|thumb|Basic automatic frequency control in a radio receiver. У = RF amplifier stages, Д = frequency discriminator stage]]
In [[radio]] equipment, '''Automatic Frequency Control''' (AFC), also called '''Automatic Fine Tuning''' (AFT), is a method or circuit to automatically keep a [[resonant circuit]] [[Tuner (electronics)|tuned]] to the [[frequency]] of an incoming [[radio signal]]. It is primarily used in [[radio receiver]]s to keep the receiver tuned to the frequency of the desired station.
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