US PATENT SUBCLASS 342 / 101
.~.~.~.~ With filter control

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

73  DF  RETURN SIGNAL CONTROLS RADAR SYSTEM {3}
89  DF  .~ Receiver {4}
98  DF  .~.~ Frequency {2}
99  DF  .~.~.~ Doppler frequency tracking {2}
101.~.~.~.~ With filter control

DEFINITION

Classification: 342/101

With filter control:

(under subclass 98) Subject matter wherein the returned signal is used to vary the center frequency or the bandwidth of a receiver filter circuit.