DX Engineering DXE-MBVE-2, Руководство пользователя

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Installation
Site Selection
Select a mounting location clear from power lines, structures and other antennas by a minimum of
43 feet ( 33 + 10 foot safety rule).
Consider overhead power lines, utility cables and wires . The
further away the vertical is mounted from local noise sources or other metallic objects, which can
re-radiate noise and affect the tuning, radiation pattern and SWR, the better. Determine the direction
you want the antenna to tilt down and make sure there is adequate clearance (at least 43 feet). There
should also be a clear diameter of about 35 feet from the antenna for the guying and radial systems
that will extend away from the antenna.
Mounting Pipe
Use a customer supplied thick-walled galvanized steel mounting pipe
at least 4 feet long. This will allow approximately 2 feet or more to be
below ground and 20 inches above ground. A thick-walled steel pipe
1-3/4" OD to 2" OD maximum is recommended with a minimum
thickness of 1/8" (1/4" preferred) should be used. The standard 1-1/2"
galvanized water pipe (with its 1.9" OD) is just fine for this application
and can usually be found at your local home building supply store. For
permanent mounting, use a post-hole digger to make the hole deep
enough to accommodate at least 2 feet of pipe and a couple inches of
gravel at the bottom for drainage. Set the mounting pipe on the gravel,
use the pre-mix concrete to fill around the pipe, adding water and
mixing as you fill or mix the concrete first, then pour in the hole
(depends on the type of concrete you purchase). Fill the hole until the
concrete is level with the ground around it. Use a level on the
mounting pipe as you fill the hole to be sure is vertically straight.
Allow to set overnight. Your location, landscape and ground
conditions may require different mounting solutions in order to have
the steel mounting pipe and the vertical antenna in a secure position.
Note: Galvanized steel, rather than aluminum, is much more
suitable for mounting in concrete. Aluminum will quickly corrode due to incompatibility
with the materials used to make concrete.
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 radials at 32 feet long is preferred and
highly recommended. The extra radials help overcome unknown