D-Link ANT24-0230 - Xtreme N Antenna, Руководство пользователя

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ANT24-0700 Install Guide System Requirements
Fresnel Zone
How far above the ground and other obstacles the antennas need to be is
determined by the radius of the Fresnel zone. The radius of the Fresnal Zone
depends upon the frequency and distance between the two radios. The
following table provides approximate Fresnel zone radius:
In order to have LOS clearance, the combined antenna height should be equal
to or at least 70% of the radius of the Fresnel zone.
Fresnel Zone Radius:
Range Distance between
antennas
Required Fresnel Zone
Radius ( 2.4GHz Radius) Required Fresnel Zone
Radius ( 5GHz Radius)
300m 3.06m 2.12m
1.6Km 7.07m 4.9m
8Km 15.81m 10.95m
10Km 17.68m 12.25m
15Km 21.65m 15m
Required Fresnel
Zone radius