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Microwave Communication

Microwave Communication
In an SHF pulsed radar set, a reflex klystron can be used as a

Single mixer stage
Transmitter oscillator
Duplexer stage
Local oscillator

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Microwave Communication
In microwave transmission using digital radio, what causes most intersymbol interference?

Rayleigh fading
Slow fading
Delayed spreading
Random Doppler shift

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Microwave Communication
If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers

Must remain as before
May be decreased
Must be increased
Must be doubled

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Microwave Communication
__________ is the progressive decrease of signal strength with increasing distance.

Radiation
Propagation
Attenuation
Modulation

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Microwave Communication
What do you call an attenuation that occurs over many different wavelengths of the carrier?

Rician fading
Rayleigh fading
Wavelength fading
Slow fading

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Microwave Communication
A reflex klystron is oscillating at the frequency of its resonant cavity. If the reflector voltage is made slightly less negative, the

Oscillation will cease
Bunching would occur earlier in time
Output power would increase
The frequency will decrease

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