US PATENT SUBCLASS 342 / 425
.~.~.~.~ Conical scan antenna type

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

350  DF  DIRECTIVE {10}
385  DF  .~ Beacon or receiver {2}
417  DF  .~.~ Direction-finding receiver only {14}
422  DF  .~.~.~ With self-orienting antenna pattern {4}
425.~.~.~.~ Conical scan antenna type

DEFINITION

Classification: 342/425

Conical scan antenna type:

(under subclass 422) Subject matter wherein the antenna of the receiver is operated in a conical pattern about a pointing axis of the tracking system.