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Installation
Additional safety recommendations
Only qualified personnel with authorisation to work at heights are entitled to install antennas on masts,
roofs and walls of buildings. Do not install the antenna in the vicinity of electrical lines. The antenna
and brackets should not come into contact with electrical wiring at any time.
The antenna and cables are electrical conductors. During installation electrostatic charges may build
up which may lead to injury. During installation or repair work all open metal parts must be temporarily
grounded.
The antenna and antenna feed line must be grounded at all times.
Do not mount the antenna in windy or rainy conditions or during a storm, or if the area is covered with
snow or ice. Do not touch the antenna, antenna brackets or conductors during a storm.
6.3. Antenna feed line
The antenna feed line should be chosen so that its attenuation does not exceed 3 to 6 dB as a rule of
thumb, see Chapter 3, Network planning. Use 50 Ω impedance cables only.
The shorter the feed line, the better. If RipEX is installed close to antenna, the data cable can be replaced
by an Ethernet cable for other protocols utilising the serial port, see Advanced Configuration, Terminal
server. This arrangement is recommended especially when the feed line would be very long otherwise
(more than 15 meters) or the link is expected to operate with low fading margin.
Always follow the installation recommendations provided by the cable manufacturer (bend radius, etc.).
Use suitable connectors and install them diligently. Poorly attached connectors increase interference
and can cause link instability.
6.4. Grounding
To minimise the odds of the transceiver and the connected equipment receiving any damage, a safety
ground (NEC Class 2 compliant) should be used, which bonds the antenna system, transceiver, power
supply, and connected data equipment to a single-point ground, keeping the ground leads short.
The RipEX radio modem is generally considered adequately grounded if the supplied flat mounting
brackets are used to mount the radio modem to a properly grounded metal surface. If the radio modem
is not mounted to a grounded surface, you should attach a safety ground wire to one of the mounting
brackets or a screw on the radio modem's casing.
A lightning protector should be used where the antenna cable enters the building. Connect the protector
to the building grounding, if possible. All grounds and cabling must comply with the applicable codes
and regulations.
6.5. Connectors
RipEX uses standard connectors. Use only standard counterparts to these connectors.
You will find the connectors' pin-outs in chapter Section 4.2, "Connectors".
© RACOM s.r.o. – RipEX Radio modem & Router
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