DX Engineering DXE-4030VA-1, Руководство пользователя

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WARNING!
INSTALLATION OF ANY ANTENNA NEAR POWER LINES IS DANGEROUS
Warning :
Do not locate the antenna near overhead power lines or other electric light or power
circuits, or where it can come into contact with such circuits. When installing the antenna, take
extreme care not to come into contact with such circuits, because they may cause serious injury or
death.
Overhead Power Line Safety
Before you begin working, check carefully for overhead power lines in the area you will be
working. Don't assume that wires are telephone or cable lines: check with your electric utility for
advice. Although overhead power lines may appear to be insulated, often these coverings are
intended only to protect metal wires from weather conditions and may not protect you from electric
shock
Keep your distance! Remember the 10-foot rule: When carrying and using ladders and other long
tools, keep them at least 10 feet away from all overhead lines - including any lines from the power
pole to your home.
Installation
Site Selection
Select a mounting location clear from power lines, structures and other antennas by a minimum of
35 feet.
Consider overhead power lines, utility cables and wires . The vertical antenna should be
mounted away from local noise sources or other metallic objects which can re-radiate noise and
affect the tuning, radiation pattern and SWR. Determine the direction you want the antenna to tilt
down and make sure there is adequate clearance (at least 35 feet). There should also be a clear
diameter of at least 33 feet from the antenna for the guying and radial systems that will extend away
from the antenna.
Radial System
The use of a radial system is a key requirement for a high performance quarter wave vertical
antenna system. With a vertical antenna system, the radials are the second half of the antenna. The
radials contribute to the radiation efficiency of the entire vertical antenna system.
At a minimum, 20 radials, each 32 feet long, should be used with this antenna. Using 32 (or more)
radials at 32 feet long is preferred and highly recommended. The extra radials help overcome
unknown poor-soil conditions, improve bandwidth, and ensure the best performance possible from
the vertical antenna.
DXE-RADW Radial Wire, a 14 gauge stranded copper wire with black relaxed
PVC insulation, is suggested for the best results.