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272 Chapter 12 Install Companion or DECT Systems
P0993133 03
Install an outdoor omnidirectional antenna (Canada)
Use the procedure in this section to install an outdoor, omnidirectional antenna (Canada only). Use
the following guidelines to install an outdoor omnidirectional antenna:
• Locate the antenna on the external wall of the building.
• Keep the outdoor omnidirectional external antenna as close as possible to the base station. The
base station itself must always be located inside the building.
• The recommended installation height is 4 m (13 ft) to 5 m (16.5 ft) above ground level.
• Always install a surge protector between an outdoor omnidirectional external antenna and a
base station.
Note: You must install the antenna on a vertical surface.
Note: The connector on the outdoor omnidirectional external antenna is a TNC female
connector. To connect the antenna, you need an adapter to connect the TNC connector to
the BNC coaxial cables or a coaxial cable with a TNC male connector on one end and
BNC male connector on the other end.
Caution: Fit lightning protection to the antenna if appropriate.
See “Install a lightning surge protector (Canada)” on page 274 for more information.
Important points to remember:
• Do not install the external antenna or the lightning surge protector during an electrical
storm.
• Always turn off the base station power before connecting the coaxial cable of an
outdoor antenna.
• Always install the antenna at the cable entry point into the building.
• Connect the lightning surge protector to ground before connecting the coaxial cable.