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What is space wave propagation? State its three components.
Question appears in these question papers
Derive an expression for the maximum line of sight distance between two antennas for space wave propagation.
Line of sight propagation is also called as_________________ .
- sky wave
- ground wave
- sound wave
- space wave
(i) Which mode of propagation is used by shortwave broadcast services having frequency range from a few MHz upto 30 MHz? Explain diagrammatically how long distance communication can be achieved by this mode.
(ii) Why is there an upper limit to frequency of waves used in this mode?
What is ground wave communication? Explain why this mode cannot be used for long distance communication using high frequencies
The outermost layer of the earth’s atmosphere is _______.
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