Clear-Com FreeSpeak II, Руководство пользователя

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Page 22 399G169 Rev B 27 April 2016
• Consider both
capacity
and
coverage
. How many beltpack users are
there and what are their movements? Ensure that you have enough
capacity where users congregate, as well as allowing for coverage
area.
•
What are the individual characteristics of your site? Radio waves can
be reflected by metallic objects, and reduced by some objects,
including the human body (for instance, a large audience can affect
transmission).
•
What conduit (cabling) is already available on site? Are there power
points? Splitters must be powered locally, and Clear-Com
recommends powering antennas locally.
•
As a general rule, antennas should be placed 8 – 10 feet high (2.5 –
3 meters high).
•
When co-locating antennas for extra beltpack capacity in one area, do
not put the devices too close to each other. They should be placed
between 3 and 20 feet (1 - 7 meters) apart.
•
FS II antennas can be placed at any orientation.
• Antennas have an IP (International Protection) rating of 65. This
means they can be mounted outside and will be weather-proof.
3.1.1 Antenna capacity (how many beltpacks?)
Clear-com recommends a conservative approach to antenna capacity, to
ensure coverage and allow for system losses.
•
1.9 GHz : 3 - 4 beltpacks per antenna
•
2.4 GHz: 2 - 3 beltpacks per antenna.