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11. Locate the 3" OD x 72", 0.120” wall thickness antenna bottom element
section. There are 5 holes drilled in this element section.
One drilled hole at the bottom is for the feedpoint hardware.
Four drilled holes at the top are used for mating to the next antenna
element section.
Loosen the previously installed U-Bolts (
Step 9
). Insert the 72"
Antenna Bottom Element Section into the antenna base section
through the upper and lower U-Bolts.
Position the single feedpoint hole at the bottom facing outward
as shown in the picture to the right.
The bottom of the 3" OD element tube should be even with the
bottom of the insulated channel as shown below.
Side View Front View
Tighten the lower and upper U-Bolt clamps hardware evenly so the length of the exposed
threads is approximately equal. Any clamp should be tightened evenly from side-to-side with an
equal amount of thread above each nut.
