Here is the deal.
I bought an unused HD 70' TriEx crankup with base.
Have PE analysis by a Georgia registered PE, not cheap,
required for City of Atlanta zoning.
I was expecting a big oak to die and was going to take
it down and put the tower up. Even got a permit.
However, the darn tree just gets healthier every year.
I'm not about to take down a healthy 80 year old oak!
The tower was about 15 years old when I bought it.
It's been here abotu 6 years. So, you will want to replace
the spring and cables. Made up cables are about $300
at the local rigging supply.
I've met a guy who is interested in the tower but neither of
us has a clue as to what would be a reasonable exchange.