Determine Range & Clearance
Determine the Outdoor Range
3-4
Avaya Outdoor Antenna Installation Guide
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The omni-directional antennas, have by nature an omni directional azimuth
pattern which makes these antennas easy to install. There is also a gain
beam width relation for omni-antennas: the higher the gain of the omni-
antenna the narrower the vertical beam width. In a hilly terrain a 7dBi omni
antenna can/will be a better solution then the 10 dBi omni-antenna.
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The 12 dBi wide-angle antenna is a good solution for the Central
Outdoor Router (base) antenna in hilly terrain. It combines a wide opening
angle with relative high gain. The mounting brackets allow tilting of the
antenna.
For beamwidth and gain characteristics of the various antennas, please
consult the appendices of this document that describe each antenna in more
detail.
The length of the antenna cable also has an impact on the maximum range that
can be achieved with the antenna combination (see “Determine the Cable
Factor” on page 3-7).
Subject to local radio regulations that in a number of countries limit the
maximum output power, Avaya Inc. offers different outdoor antenna products in
the various countries over the world. Therefore you will need to consult the table
that matches the radio regulations as apply in your country:
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Table 3-1 on page 3-5, for the USA and Canada and any other country that
adheres to the radio regulations as defined by the US Federal
Communications Commission (FCC).
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Table 3-2 on page 3-6, for all European countries, Japan, and any other
country that adheres to the radio regulations as defined by the European
Telecommunications Standards Institute (ETSI) and MPT.