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Vertical Base Section
The base section is made up of an Extren
®
insulated mounting channel with hardware, a mounting
plate, two 3/8" U-Bolt assemblies and the base antenna element sections.
Using
Figure 4
, attach the aluminum backing plate to the back of the insulated channel. The base
hardware kit contains four 2" bolts, four flat washers, four aluminum spacers, four split washers and
four nuts. From the inside of the channel, insert a 2" bolt with a flat washer through each of the
middle four holes, through the backing plate. Put on the aluminum spacers, split washers and plain
hex nuts. Tighten firmly, but not enough to crush the insulated channel.
Figure - 4
Assemble the two bottom element sections, aligning them so the feedpoint holes match up together
as shown in
Figure 5
.
Figure 5
Install the 1/4-20 x 1" bolt through the feedpoint hole in the elements
from the inside, so the threads stick out. Install a star washer, flat
washer, then a standard nut. Tighten securely. Add another star
washer, flat washer and standard nut, but do not tighten. The
connection from the Vertical Feedline Current Choke attaches to this
hardware.
Figure 6
shows the completed feedline assembly.
Figure - 6
