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For duct propagation the necessary condition is \(\frac{dμ}{dh}\) is always +ve.

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For duct propagation the necessary condition is \(\frac{dμ}{dh}\) is always +ve.

(a) False

(b) True

This question was posed to me during an internship interview.

The origin of the question is Space Wave Propagation topic in chapter Space Wave Propagation of Antennas

1 Answer

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Best answer
Correct choice is (a) False

For explanation: To determine the presence of duct propagation (T.I.L) and \(\frac{dμ}{dh}\) is -ve

This occurs at a height of 15- 50m above the earth surface and at lower atmospheric layers.

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