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

Rayleigh fading
Slow fading
Random Doppler shift
Delayed spreading

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Microwave Communication
The Gunn diode oscillator

Depends on the formation of charge domain
Operates over a positive resistance characteristic
Generates frequencies which are below 100 MHz
Is capable of generating continuous microwave power of the order of kilowatt

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