Electronics (Mike Jaroch)
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A movable vertical pulse on an A-scope or a ring on a PPI scope used to measure the range of an echo or to calibrate the range scale .
Ability of a radar to distinguish between targets that are close together .
On an A-scope sweep, a vertical displacement used to measure the range of an echo .
A movable gate used to select radar echoes from a very short range interval .
A radar display on which slant range is shown along the X axis and height along the Y axis .
The several upper limits a meter will measure as selectable by a switch or by jacks; for example, a voltmeter may have ranges of 1 volt, 2.5 volts, 10 volts, 25 volts, and 100 volts .
A longitudinal wave that has been expanded or rarefied (made less dense) as it
moves away from the source .
A gyro used to detect and measure angular rates of change .
The value obtained when one number is divided by another. This value indicates the relative proportions of the two numbers .
A detector that uses a double-tuned transformer to convert the instantaneous
frequency variations of the FM input signal to instantaneous amplitude variations .