Microwave Communication
It is possible to increase the maximum range of a radar equipment by

Raising the peak power of the transmitter
All of these
Narrowing the beam width and increasing the pulse duration
Lowering the pulse frequency

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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
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
Velocity modulation at the input cavity creates density modulation at the output cavity

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