User's Manual

B
Appendix
obr3650hp_ml_r01_sd Approved: C.W.
B-1
B1 Installing the Antenna - Points to Consider
Improperly installed antennas will add cost, time, and frustration to your operation. Taking some time to plan a proper
installation will have long term benefits.
B1.1 Planning the Installation
Consider the following points when planning an installation:
• The antenna should support proper grounding and lightning protection.
It is usually far easier to bring the coax into the building where the AC power enters the building; because this is the
easiest and cheapest way to properly bond the cable entrance to the AC ground (coax is easier and cheaper to work
with than #6 AWG copper). Any lightning energy coming in on the coax will be also shared and spread over to the
AC ground system, and there will be no voltage differential between the two ground systems.
• The antenna should be able to send and receive a strong signal.
The simplest method is to presurvey the proposed location with an antenna and transceiver that are connected via
a temporary string of coaxial cable to a power inserter. The assembly can be mounted to any pole and hand–held
to determine the presence of signal using the integrated beeper.
• The antenna should support your plan for cableruns.
Cableruns that are too long might decrease the efficiency of signal transmission. Cableruns should be able to
support proper grounding and surge protection. Make sure that you have determined the entire wiring route & needs
before drilling holes in the structure and attaching mounting hardware.
CAUTION
To comply with RF exposure requirements, the integrated antenna or any external antenna which is
connected to an OBR3650HP requires a minimum distance of 1.5 meters between it and all persons.
B1.2 Safety Considerations
Before you begin your installation, read all critical safety warnings.
• Do not put the antenna under a power line. The power line can cause interference, and also exposes the Installation
to unnecessary site hazards.
• All Installations must meet building and electrical codes. Note that some municipalities have restrictions or
community covenants regarding towers and antenna structures. Check first.
• Do not install the antenna in high winds or in stormy weather, particularly if lightning is present.
• Remember to assemble the antenna hardware at a safe location before climbing up to the antenna mount.
• Depending on your location, you may need two or more people to install the antenna and mount.
B1.3 Evaluating the Mounting Location
You can mount the antenna to a variety of surfaces.
• The antenna should have a clear line-of-sight to the subscriber station. Do not put the antenna where it will be
blocked by people, animals or vehicles.
Consider how time and the season will affect the line-of-sight. For example, will foilage from growing trees interfere
with the line-of-sight? Will wind or ice add strain to the mounting assembly?