Electronics (Mike Jaroch)
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RANGE MARKERA 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 [18]. | ||
RANGE RESOLUTIONAbility of a radar to distinguish between targets that are close together [18]. | ||
RANGE STEPOn an A-scope sweep, a vertical displacement used to measure the range of an echo [18]. | ||
RANGE-GATEA movable gate used to select radar echoes from a very short range interval [18]. | ||
RANGE-HEIGHT INDICATORA radar display on which slant range is shown along the X axis and height along the Y axis [18]. | ||
RANGESThe 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 [3]. | ||
RAREFIED WAVEA longitudinal wave that has been expanded or rarefied (made less dense) as it moves away from the source [10]. | ||
RATE GYROA gyro used to detect and measure angular rates of change [15]. | ||
RATIOThe value obtained when one number is divided by another. This value indicates the relative proportions of the two numbers [2]. | ||
RATIO DETECTORA detector that uses a double-tuned transformer to convert the instantaneous frequency variations of the FM input signal to instantaneous amplitude variations [12]. | |