[TowerTalk] Mixing Rohn 20G and 25G

[Wayne Kline]

I also have experience with 20-G and 25-G towers... @ my station my 2mter/450 MHZ  and one 6 meter beam
 5 element 14' boom  are on at 36ft. an consist of  3 sections of 20-G and a top of 25-G  AG3 ?   it's house bracketed @ 18 ft. 
Been in place for 24 years  BUT  extremely light wind load.
 
IMHO  @ HF  a C-3. TA33  or A3 would be the BIGGEST  .
 
So my question to you is WHAT are you planning to adorn the tower with ?
 
Wayne W3EA   . . 

 
> Date: Tue, 1 Jul 2014 07:42:14 -0500
> From: kkbroadcastengineering at gmail.com
> CC: towertalk at contesting.com
> Subject: Re: [TowerTalk] Mixing Rohn 20G and 25G
> 
> Nathan,
> 
> I would caution you to not mix the sections nor even use the 20 for
> anything more than VERY light duty use.
> 
> With that said...  Back in my younger days when I did a lot of tower work
> for CB and Ham operators, there were a number of mixed 20/25 towers
> supporting large CB antennas and they stayed up many years.  I do recall
> working on one where the 20 top section physically broke during a wind
> storm.
> 
> Climbing a mixed 20/25 tower is a real pain as the steps are different
> distances apart.
> 
> Good luck,
> 
> Kevin C. Kidd, CSRE/AMD
> AM Ground Systems Company  -  WD4RAT
> kkidd at kkbc.com  --  866-22-RADIO -- 866-227-2346
> www.amgroundsystems.com
> 
> 
> On Mon, Jun 30, 2014 at 7:42 PM, Linux Mercedes <linuxmercedes at gmail.com>
> wrote:
> 
> > Hello,
> >
> > Whilst moving tower sections from the shed to the shop so I could clean
> > them up and make a couple of fixes before putting up my tower, I noticed
> > that some of them seemed lighter than others. Turns out I've got a mix of
> > 20G and 25G sections.
> >
> > What are your thoughts on putting up, say, 30 or 40 feet of 25G and then
> > another 20 or 10 feet of 20G? I'd like to use the best sections I have on
> > the tower, but if mixing is a no, then I'll fix up some of the other
> > sections I have and build a homogeneous tower.
> >
> > Thanks,
> > Nathan
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