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Hi Ian,
Glad that things are busy for
you with your repeaters.
As for wooden poles, O get our local lines company
to install climbing rungs prior to fitment, usually starting one metre from the
ground to satisfy OSH requirements.
What about visiting your local machine
shop/engineer with some photo's of a standard "Tri-leg" tower with lattice
bracing. here in NZ we have usually 2 metre sections that can be installed with
a gin pole and a few blokes with the price of a few bevvies afterwards. I've had
these made up and usually pay $NZD about $200 per 2 Metres.
...How are the Maxon's going?
_________________________________________________________________
Gareth Bennett
This e-mail is confidential, if you received this message in error, or
you
are not the intended recipient,
please return it to the sender and
destroy any copies.
Thank you.
----- Original Message -----
Sent: Monday, August 22, 2005 7:37
PM
Subject: Re: [Repeater-Builder] Re:
Aluminium ladders as towers
thanks garteth
i have one site with a ex power pole already
setup with a 9 meter steel pole along side of it but it is very hard
climbing the post to realease the top mounting clamp 8 meters up the post
.
also the site i am trying to improve a 4wd is the only vehicle that can
access the site
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Gareth
Bennett wrote:
What's wrong with the old wooden telephone
pole with a 2" galv pipe outriger 80% the length of the pole say
spaced 1' from the pole? Easy to rig, tough, not subject to "Rectification"
as much as lattice towers, cheap. and can be put in by your power utility
pretty easily.
Just my 10c worth
_________________________________________________________________
Gareth Bennett
This e-mail is confidential, if you received this message in error, or
you
are not the intended recipient,
please return it to the sender and
destroy any copies.
Thank you.
-----
Original Message -----
Sent:
Monday, August 22, 2005 12:23 PM
Subject:
Re: [Repeater-Builder] Re: Aluminium ladders as towers
thanks for the thoughts .Does anyone know of some good
pages on cheap masts or tower construction around 5-9 meters
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
Mike
Perryman K5JMP wrote:
Ian,
In my part of the world a good aluminum ladder costs about twice what a
section of Rohn 25G costs...
I think I would go with the 25G just for safety and strength, not to mention
that your insurance agent would have a fit..
Mike
-----Original Message-----
From: Repeater-Builder@yahoogroups.com
[mailto:Repeater-Builder@yahoogroups.com]On Behalf Of Chuck Kelsey
Sent: Sunday, August 21, 2005 3:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Aluminium ladders as towers
I agree. There is not very good lateral strength in a ladder because there
is no diagonal bracing like most towers have. You need to think "triangles."
If it creates a triangle, in all planes, it's going to have strength. The
old "Dill" towers with horizontal "steps" had no sideways strength. Today's
Rohn has "Z" braces to form triangles.
Chuck
WB2EDV
----- Original Message -----
From: "Coy Hilton" <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Sunday, August 21, 2005 3:10 PM
Subject: [Repeater-Builder] Re: Aluminium ladders as towers
--- In Repeater-Builder@yahoogroups.com, "Coy Hilton" <[EMAIL PROTECTED]> wrote:
One addition, this is a single aluminum ladder.
Well, This was shown in the 2000 ARRL hand book...sorry to say. This
is a single aluminum ladder. It
works fine for field day operation the photo shows an exstention
ladder guyed at three points sitting in a hole dug about a foot deep
to keep it from walking off in the wind. I can see this being done for
a temperary setup but to use it as a commertial installation is
shurely dangerous.
Good luck Ian
AC0Y
--- In Repeater-Builder@yahoogroups.com, Ian Wells <[EMAIL PROTECTED]>
wrote:
Hi guys .I have heard of a communication business here in australia
useing ladders as towers .anyone tried this or know of any webpages
They must either join two together with braces or four of to form a
square which forms a free standing tower
Thank you
Ian Wells
Kerinvale Comaudio
mail service 1017,
Biloela,4715.
www.kerinvalecomaudio.com.au
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