US PATENT SUBCLASS 455 / 173.1
.~.~.~ With automatic frequency control of fine tuning

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
150.1  DF  .~ Signal selection based on frequency (e.g., tuning) {13}
170.1  DF  .~.~ With mechanical or electromechanical selection {7}
173.1.~.~.~ With automatic frequency control of fine tuning

DEFINITION

Classification: 455/173.1

With automatic frequency control of fine tuning:

(under subclass 170.1) Subject matter wherein the manual, mechanical, or electromechanical means includes means for automatically stabilizing a receiver local oscillator frequency or means to permit fine adjustment of the local oscillator to the carrier frequency of a signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

75, for transceivers with frequency stabilization (e.g., AFC).

119, for transmitters with automatic carrier frequency stabilization.

164.1+, for frequency scanning receivers with automatic frequency control.

182.1+, for channel or station selection receivers with automatic frequency control or fine tuning control.

192.1+, for signal selection in general with automatic frequency control or fine tuning control.

255, for nontuning receivers with automatic frequency control. SEE OR SEARCH CLASS

334, Tuners,

13, 16, and 26+ for tuners with automatic frequency centering circuits.