[TowerTalk] Galvenized Monopole Foundation

[Steve Maki]

I would plan on mounting the rotator and mast outside of the pole, 
rather than inside.

I'd install a couple of "ring collars" - off the shelf weldments used in 
the cell business - one at the pole top, and one down 6' or so. To that 
you clamp a 4" or 5" pipe mount, which can be plumbed with no trouble.

Then to this pipe you can attach shelves at any height - one for the 
rotator, and a couple for thrust bearings for example. You can make this 
as heavy duty as you want, mostly with off the shelf parts - just a 
little ingenuity and fab work required.

BTW the ring collars come with three faces for clamping stuff, so you 
could have some fixed yagis just below the tower top facing in favorite 
directions.

Anyway, it gives you way better flexibility and serviceability than 
having stuff inside the pole.

-Steve K8LX

On 08/04/20 20:06 PM, Jonathan - KE0YBL via TowerTalk wrote:

> Yep, planning on a small crane. Not sure this type of flange is ideal for a buried pier footing. I've not found specific details on those beyond conceptual, though.
> 
> Also planning to fabricate a cross brace inside for rotator and also for thrust bearing, and perhaps a fiberglass cover... Unless I can find something field tested by others. Thanks for the reply.
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