Follow the manufacturers instructions, and unguyed RG25 is acceptable.
Obviously, free standing to 70+ feet does not meet the manufacturers
recommendation. Rohn 25G can be self supporting per the manufacturers
instructions. It can also be bracketed per the manufacturers instructions. It
can also be guyed per the manufacturers instructions. You can just go higher
with guying, and support a greater windload. For some of us, bracketed and
going to 35-40' is a good compromise between having something in the air, and
not having something in the air.
-------------- Original message ----------------------
From: "Michael Ryan" <mryan001@tampabay.rr.com>
> Bill, In my opinion you are right on the money. I read stuff on here about
> how successful guys have been with their respective projects. Most are cool.
> This week the subject is the Rohn 25....a lot of discussion on UN-GUYED Rohn
> 25. Are you kiddin'? You just have to wonder how many of these success
> stories are in reality just accidents looking for the right time and place
> to 'drop trow'. I also maintain that some of these weekend warriors are the
> reason why it can be so hard to get a permit to install and /or permission
> to install a tower for many of the rest. The auto manufacturers do not
> include a manual on how to drive in the glove compartment of each car they
> sell. They assume the buyer does. The same is true of the companies who sell
> towers and related "stuff" ( that's 'tower talk' for equipment). Fact is it
> can be just as dangerous to install or service a tower without the
> experience and/or due diligence as it is to take a drive on The Howard
> Frankland Bridge... but they'll keep on doing it. I can hear it now "...my
> brother-in-law said it would be ok." All I have to say is,
> " good luck, my brass balled buddies." - Mike
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Cqtestk4xs@aol.com
> Sent: Monday, November 12, 2007 9:11 PM
> To: TOWERTALK@contesting.com
> Subject: Re: [TowerTalk] Rohn 25G Tower
>
> In a message dated 11/13/2007 12:20:30 A.M. Greenwich Standard Time,
> w5kgt@w5kgt.com writes:
>
> I have installed over 85 Rohn 25G towers in the past 30 years. Many have
> been 40-50 foot with the proper base and no guy wires. These have been for
> the
> CB'ers and Ham radio operators. These also have anywhere between 3 & 6
> element
> beams. Never have heard of a problem with any of these. I know of a 70 foot
>
> Rohn 25G tower that has a 4 element Moonraker beam with no guy wires. It
> has
> a 5'x5'x5' concrete base and still standing after 25 years of North
> Louisiana
> weather....W5KGT
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Uh, Kevin installed my tower out here in KH6. Kevin has a pretty big brass
>
> set to hover above the ground on 50 feet of unguyed Rohn 25...especially
> with
> a tribander on top. This is an accident waiting to happen.
>
> In Florida I saw the results of what a hurricane can do to Rohn 25 and it
> ain't pretty. With several hundred pounds of tower and antenna at that
> height,
> the installation can be lethal.
>
> Just because you can do something doesn't mean it's safe. I can drive with
>
> without using my hands for a while and just because I can do it doesn't
> mean
> it is a smart thing to do.
>
> YMMV.
>
> Bill K4XS/KH7XS
>
>
>
>
>
>
>
>
> ************************************** See what's new at http://www.aol.com
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> __________ NOD32 2653 (20071112) Information __________
>
> This message was checked by NOD32 antivirus system.
> http://www.eset.com
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> 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
|