Microwave Communication
Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance.

Sixth
Fourth
Third
Fifth

ANSWER DOWNLOAD EXAMIANS APP

Microwave Communication
In a pulsed radar set, the STC circuit is used to

Vary the pulse frequency in order to control the maximum target
Improve the target bearing resolution
Increases receiver sensitivity for echoes from targets
Reduce interference from the effects of sea return

ANSWER DOWNLOAD EXAMIANS APP