US PATENT SUBCLASS 342 / 18
.~.~.~ By changing frequency

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

13  DF  RADAR EW (ELECTRONIC WARFARE) {3}
16  DF  .~ ECCM (Electronic counter-countermeasures, i.e., antijamming) {1}
17  DF  .~.~ Radar reacts to jamming {2}
18.~.~.~ By changing frequency

DEFINITION

Classification: 342/18

By changing frequency:

(under subclass 17) Subject matter wherein the radar system changes its operating frequency in response to being jammed.