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I have a Fortigate AP, and need to understand its radio pattern for optimal positioning.

I've already understood the E-plane and H-plane representations and also that number on the circumference of the circles are radiuses.

But what are the values listed vertically down to the center of the circle and what do they mean, how can I equate that to any distance(in meters).

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Duck Dodgers
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Xsmael
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1 Answers1

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The numbers arranged vertically are decibels. They tell you the relative radiant intensity in each direction. For example if in one particular direction you read 0 on that scale, and in another direction you read -3, then the power in the latter direction is half what it is in the first direction.

Translating this into a range in meters depends on the link budget, which would have to include things like additional attenuation due to walls and floors, and some margin for interference.

Phil Frost - W8II
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