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tuning, radiation pattern and SWR. Determine the direction you want the antenna to tilt down and
make sure there is adequate clearance (at least 46 feet).
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.
Assembly
The
DXE-MBV-1
shipping boxes contain the vertical tubing sections, an insulated U-channel, two
DXE-SAD-200A
2" U-Bolt assemblies, a backing plate, a Tilt Base with two stainless steel V-
Clamps, 15 stainless steel clamps, a black vinyl cap, and stainless steel hardware. Carefully un-box
the antenna and separate the various parts. Nine of the element sections are 36" long, two are 72”
long. The 2" OD base element section is drilled for the feedpoint connection. The base section does
not have slit ends. The 2-1/8" OD section is slit on both ends. All the other sections are slit on one
end. The vinyl cap for the top element section should be installed after assembly of the vertical is
complete.
Note: DXE-P8A Penetrox™ A Anti-Oxidant
should be used between all antenna element
sections. Penetrox™ A is an electrical joint compound to affect a substantial electrical
connection between metal parts such as telescoping aluminum tubing or other antenna
pieces. It ensures high conductivity at all voltage levels by displacing moisture and
preventing corrosion or oxidation.
Note: UMI-81343 Never-Seez®
or
DXE-NSBT8 Anti-Seize
should be used on all clamps,
bolts and stainless steel threaded hardware to prevent galling and to ensure proper
tightening.
