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Duct propagation occurs at __________

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in Antennas by (157k points)
Duct propagation occurs at __________

(a) lower atmospheric layers

(b) higher atmospheric layers

(c) ionospheric layers

(d) any part of the atmospheric layer

I have been asked this question in homework.

The question is from Space Wave Propagation in division Space Wave Propagation of Antennas

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The correct answer is (a) lower atmospheric layers

The explanation is: Duct propagation occurs at lower atmospheric layers at 15 – 50m above the earth surface. It occurs due to temperature inversion layer. The waves follow the curvature of earth up to 1000km long.

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