US PATENT SUBCLASS 342 / 199
.~ Automatic frequency control (AFC)

Current as of: June, 1999
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342 /   HD   COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION)

175  DF  WITH PARTICULAR CIRCUIT {13}
199.~ Automatic frequency control (AFC)

DEFINITION

Classification: 342/199

Automatic frequency control (AFC):

(under subclass 175) Subject matter wherein the circuitry is provided to maintain the frequency of the radar at a constant value or in a fixed relation with respect to some other section of the radar.