Towertalk
[Top] [All Lists]

Re: [TowerTalk] Mixing Rohn 20G and 25G

To: Linux Mercedes <linuxmercedes@gmail.com>
Subject: Re: [TowerTalk] Mixing Rohn 20G and 25G
From: Wayne Kline <w3ea@hotmail.com>
Date: Tue, 1 Jul 2014 20:32:47 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Two levels of guy is what my concern would be. I am in as now and be home in PA 
next week.
I have a library or Rohn catalogs and in the older ones I have the full spec on 
r 25 -G.
But if my gray matter serves me well  R 25- Gg is not suitable for guying let 
alone two levels .
And this was the old spec. So with out a house bracket your walking on thin ice.

YMMV

Wayne W3EA

Sent from my iPad

On Jul 1, 2014, at 6:24 PM, "Linux Mercedes" <linuxmercedes@gmail.com> wrote:

> Wayne,
> 
> I'll primarily be using it for wireless internet. Unfortunately, the tech at 
> the WISP I spoke to was pretty vague about the wind load of the antenna 
> they'll be using, but he assured me it would be 'minimal' and didn't think it 
> would be that big of a concern.
> 
> I won't be house bracketing this install, but it will be guyed at two levels 
> (what Rohn recommends for 50' of 25G).
> 
> --Nathan
> 
> On 07/01/2014 09:59 AM, Wayne Kline wrote:
>> 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@gmail.com
>>> CC: towertalk@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@kkbc.com  --  866-22-RADIO -- 866-227-2346
>>> www.amgroundsystems.com
>>> 
>>> 
>>> On Mon, Jun 30, 2014 at 7:42 PM, Linux Mercedes <linuxmercedes@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
>>>> _______________________________________________
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> TowerTalk mailing list
>>>> TowerTalk@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>> 
>>> _______________________________________________
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>                         
>> _______________________________________________
>> 
>> 
>> 
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>