CWNP

CWDP-305 · Question #75

What is the purpose of Friis transmission equation [ (LdB) = 20 log(d) + 20 log (f) - 27.55 ]?

The correct answer is C. Calculate RF path loss in free space. See the full explanation below for the reasoning.

Question

What is the purpose of Friis transmission equation [ (LdB) = 20 log(d) + 20 log (f) - 27.55 ]?

Options

ACalculate earth bulge to determine minimum antenna height
BCalculate receive sensitivity for an 802.11 radio/antenna pair
CCalculate RF path loss in free space
DCalculate the loss experienced between the intentional radiator and antenna

How the community answered

(50 responses)

A
4% (2)
B
10% (5)
C
72% (36)
D
14% (7)

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