US PATENT SUBCLASS 342 / 122
.~.~ FM type

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

118  DF  DETERMINING DISTANCE {11}
120  DF  .~ Altimeter {2}
122.~.~ FM type

DEFINITION

Classification: 342/122

FM type:

(under subclass 120) Subject matter wherein the radar altimeter carrier signal is frequency modified.

SEE OR SEARCH THIS CLASS, SUBCLASS:

128+, for radar distance determination with frequency modulation circuitry, per se.

200+, for frequency modulation radar circuitry, per se.