8 Installation
PCS-9785 Satellite-Synchronized Clock
8-7
Date: 2019-07-05
8.7.6 Antenna Installation
The active receiving antenna includes three parts: the head, the feeder and the support. The
diameter of the mushroom-shaped head is 96mm and the height is 126mm. The length of the
feeder is 30m (should be declared if there is other requirement). The longer the feeder is, the more
serious the signal attenuation will be. Thus, a feeder longer than 60m should be sectionned by
amplifier.
To realize a good reception of satellite signal, the antenna head should be installed outdoor with as
large reception range as possible.
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Figure 8.7-4 Antenna head installation
NOTICE!
The antenna may be installed in an open space if it is impossible to be installed on the
top of a building. Make sure that there is no roof on the top and the installation height is
no lower than the surrounding obstacles.
NOTICE!
It is possible to cover a glass or plastic shield over the antenna head. Make sure that
there is no metallic component in the shield.
NOTICE!
This antenna has a great anti-interference capability, while if the interference signal is
too strong, there will still be influence. So it is suggested to install the antenna as far as
possible to avoid any other transmission or reception antenna.
NOTICE!
The low-loss coaxial cable feeder is one of the keys in signal transmission. It is
suggested to use the cable pipe while wiring in case of animal bit or corrosion.
NOTICE!
Because of outdoors installation, a surge arrestor is obligatory. The arrestor should be
installed between the antenna and the device. It also should be directly and
independently grounded.
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