Microwave Communication
A PPI cathode-ray tube as used on a radar set

Is used for receiver alignment
Indicates both the range and azimuth of a target
Is used to check the percentage of modulation
Indicates only the range of a target

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Microwave Communication
As the electron beam moves through a klystron’s intercavity drift space

Frequency modulation at the input cavity creates velocity modulation at the output cavity
Velocity modulation at the input cavity creates density modulation at the output cavity
Phase modulation at the input cavity creates velocity modulation at the output cavity.
Density modulation at the input cavity creates velocity modulation at the output cavity

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