US PATENT SUBCLASS 375 / 304
.~.~.~ Antenna tuning with frequency shift

Current as of: June, 1999
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375 /   HD   PULSE OR DIGITAL COMMUNICATIONS

295  DF  TRANSMITTERS {6}
302  DF  .~ Angle modulation {2}
303  DF  .~.~ Frequency shift keying {4}
304.~.~.~ Antenna tuning with frequency shift

DEFINITION

Classification: 375/304

Antenna tuning with frequency shift:

(under subclass 303) Subject matter where the transmitter is connected to an antenna circuit which is tuned to the instantaneous frequency of the transmitted carrier wave.