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S9v 31' M K II Installation Guide
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For portable ground-mount operations and DXpeditions, use our optional
Portable Mount, shown below. The Portable Mount is a heavy-duty mount with
an integral stake that makes ground mounting the S9v in temporary (or
permanent) locations fast and easy.
S9v Portable Mount
For elevated installations, mount the antenna on a mast. Do not use a mast
with an OD larger than 1-5/8". To create a mount for the S9v on the mast, simply
install the optional S9v Pipe Mount Clamp 15" from the top of the mast. The S9v
will slip over the mast and rest on the flat portion of the clamp assembly. In this
elevated configuration, the S9v functions as a ground plane (GP) antenna and
four radials are required for each intended band of operation, as discussed below.
Radials
For optimum performance, the S9v should be used with an RF ground system
consisting of radial wires.
For ground-mounted installations, use at least 16 radials (32 preferred), with
each radial at least 0.2 wavelength at the lowest operating frequency (7 MHz)
which is 26.75 feet (26 feet, 9 inches long). A ground rod is not an effective RF
ground. 14 – 16 AWG stranded insulated copper wire is recommended.
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