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What power must a point-source of radio waves transmit so that the power density at 3000 meters from the source is 1 µW/m2?

What power must a point-source of radio waves transmit so that the power density at 3000 meters from the source is 1 µW/m2?

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Asked by Kbagayas, Last updated: Dec 19, 2024

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2 Answers

John Adney

John Adney

John Adney
John Adney

Answered Jul 05, 2017

This should be 113 Watts

Formula: Power Density = Power / 4*pi*[(distance)^2]

therefore:
1(4*pi) (3000)^2 = 113 Watts only

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John Smith

John Smith

John Smith
John Smith

Answered Dec 01, 2016

113 kW
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