AES 7788 Series RF Subscriber Unit ─ Installation and Operation Manual
AES Corporation 15 40-7788, Rev 6, August 30, 2016
Mount antenna as high as possible, on or in the structure, with attics and rooftop
locations preferred. Height need not be higher than is required to overcome
nearby obstructions to the signal path if any additional height would use a longer
coax length.
A remote antenna should be mounted in a location near the transceiver to
minimize inherent signal loss due to unnecessary cable length. Do not use longer
coax than is needed to reach the antenna.
Avoid installing the antenna in close proximity to other metal surfaces, as this
may severely impact the performance of the radio communications due to the
effects of signal reflections or detuning the antenna.
o Remember that pipes, conduit, wiring, ductwork and other metal are
commonly installed within walls and could affect performance.
o Take into account foil backed insulation and wallpaper.
o Metal objects may also be located in adjacent rooms or above ceilings.
o Metallic framing is in common use today. Antenna should not be
mounted directly over or in close proximity to metal studding.
o Metallic supports are in common use today. Antenna should not be
mounted in ceilings constructed of metal beams and supports that may
interfere with the RF signal.
o The antenna must be grounded properly to help reduce damage due to
surges produced by lightning. Grounding must be done in accordance
with local building codes as well as those in accordance with any other
authority having jurisdiction.
o When needed, use higher gain antenna with rated cable and connectors.
Mount antenna as high as possible - attics that meet the temperature and
humidity range specification can help to improve performance.
(See “UHF Antenna Options” listed in Section 1.9 for available and approved
options.)
Antenna must be mounted in a vertical orientation.
Avoid tightly coiled or bunched coax as this could also affect RF performance.
Use Coax length that best fits the installation.
NOTE: During installation, the subscriber unit attempts to enroll itself into an
available AES-IntelliNet network and if successful generates signals at the central
station. Central station operators must be forewarned to avoid a false and nuisance
alarms.
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