In a previous post, I described how the ATB-75 Tiltover mechanism gave up the ghost…
Hy-Gain AV-640 Vertical Antenna Installation In Progress
Now that the VHF/UHF antenna is up, it’s time to start putting up the Hy-Gain AV-640.
Hy-Gain tells me that a footer of 2-3 cubic feet of concrete should be sufficient. I’m digging a whole about 18 inches in diameter and a little over 2 feet deep. That will be 3.5 cubic feet of concrete.
The ground here is HARD and progress is slow. I can dig down about 3 inches. Then I fill the hole with water. It takes several days for the water to soak in. Then I can dig another three inches. So far my hole is 16 inches deep.

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