[TowerTalk] Tower foundations

john at kk9a.com john at kk9a.com
Tue Feb 13 17:25:42 EST 2007

Well I guess the term shaky is my opinion based on experience with this 
tower.   As K4XS said we all have our own pucker factor and climbing it with 
no wind is probably safe.   My point was that this tower was designed to be 
guyed and that Rohn and others make freestanding towers that are better 
suited for your application.  FWIW, your county's wind speed is 105 MPH.

----- Original Message ----- 
From: "Bob Maser" <bmaser at tampabay.rr.com>
To: <john at kk9a.com>; <TOWERTALK at contesting.com>
Sent: Monday, February 12, 2007 8:46 PM
Subject: Re: [TowerTalk] Tower foundations

John, in all due respect, if you think that an unguyed 60 foot tower made
from Rohn 65G is not very strong and shaky,  I'd like to have what your
drinking.  Rohn claims that you can use 65 up to 60 feet with  70mph winds
with ±5 sqft of surface area, if you have the proper foundation.  I would
think that Rohn 65 is stronger than a LM470 in 70mph wind with equal loads.
I have a homebrewed  Hygain Hytower made with Rohn 25 and I climb up to the
27' level frequently without any guys.  Sure, you don't want to go up there
and yank back and forth but it is perfectly safe.

Bob W6TR
----- Original Message ----- 
From: <john at kk9a.com>
To: <TOWERTALK at contesting.com>
Cc: <bmaser at tampabay.rr.com>
Sent: Monday, February 12, 2007 7:47 PM
Subject: [TowerTalk] Tower foundations

> If you want a 60' self supporting tower, you should buy one and not use
> Rohn
> 65G.  A 60' unguyed Rohn 65G is not very strong and it's somewhat shaky to
> climb Having to attach guy wires every time there's a hurricane threat is
> just a pain.  If you want to use Rohn 65G, you could probably just put a
> pier pin in your concrete slab and install one set of guys near the top
> and
> you'd have a very strong tower that you would not have to worry about
> every
> time the wind blows.
> John KK9A
> To: "Talk Tower"
> Subject: [TowerTalk] Tower foundations
> From: "Bob Maser"
> Date: Mon, 12 Feb 2007 13:04:18 -0500
> List-post: <mailto:towertalk at contesting.com>
> I have a 3x3x3 foot concrete foundation in my front lawn that I have been
> using for my HyGain HyTower antenna.  MY plan is to remove the HyGain and
> enlarge the foundation to 6x6x4.  I have heard that it is possible to
> hammer
> drill holes in concrete, pour in a 2 part epoxy, and insert threaded rods
> and this will be strong enough to be used for attaching a tower.  I want
> to
> put up 60 feet of Rohn 65 and have it be self supporting unless a
> hurricane
> comes through the area, in which case I would put temporary guys on the
> tower.  Does anyone have experience with this epoxy method and can give me
> some direction on doing this?
> Thanks,
> Bob  W6TR
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