Another warning!
A few years ago I used a catapult and a drilled golf ball with some braided
nylon line over an oak tree. When it became stuck in a branch, I wound the line
round a piece of wood and gave it my full weight to release it. The end result?
I literally shot myself in the foot,
Jon Kåre Hellan wrote:
It's http://www.antennalaunchers.com/csv19/index.html - with an 'l' at
the end.
That's better.
Note that anyone thinking of using this in England might be advised to
consult with the local police as it might be interpreted as being an air
rifle, in which case the
This is Alan's site (as is the previous posting). I whole heartedly recommend
the CSV-19. It is simple to use and effective, particularly if you have tall
trees.
I've tried most of the other suggested methods, and while most will work to
some degree or another, they usually take multiple tries
The ARRL Antenna Book suggests using a pulley and counter weight to allow for
the varying distances between trees caused by wind. At my former QTH, Ellijay
GA, I noticed that in very gusty conditions sometimes the support trees moved
in opposite directions at the same time. I decided to make my
My G5RV is up in the oak trees here and is attached using springs at each
end. They are about 12 inches long and 1 inch in diameter. Been up for a
couple of years with no problems.
Brian
N1WNC
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- Original Message -
From: Ralph Tyrrell [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Monday, July 28, 2008 1:37 PM
Subject: RE: Re: [Elecraft] Elecraft Antennas in trees
The ARRL Antenna Book suggests using a pulley and counter weight to allow
for the varying distances between trees caused
With close to 40 posts in the last couple of days on these topics, we've
saturated this area. Let's let it rest for now. :-)
73, Eric WA6HHQ
Elecraft List Moderator
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You must be a
Antennas in trees
To: Elecraft@mailman.qth.net
Cc: [EMAIL PROTECTED]
Date: Monday, July 28, 2008, 1:41 PM
My G5RV is up in the oak trees here and is attached using
springs at each
end. They are about 12 inches long and 1 inch in diameter.
Been up for a
couple of years with no problems
Benny Aumala wrote:
http://www.antennalaunchers.com/csv19/index.htm
That URL seems to lead to a cybersquatter (the sort that gives you
their search engine results).
It might, though, be worth noting that professional tree climbers use
throw bags and slick line to get a messenger over a tree
, but take care of down range hits. 73
Charles Harpole
[EMAIL PROTECTED]
Date: Sun, 27 Jul 2008 12:14:11 +0100
From: [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft Antennas in trees
Benny Aumala wrote:
http://www.antennalaunchers.com/csv19/index.htm
to the rope and
start again.
Hard work. It is easier to fire up a weight in a catapult. To stop leaving
failed projectiles (e.g. tennis balls) in the tree, make the projectile out
of ice, it will then melt.
--
View this message in context:
http://n2.nabble.com/Elecraft-Antennas-in-trees-tp582760p585503
Dan's comment is very true of *any* antenna, and most especially tree
mounted antennas.
To survive storms at all, it's very important that the antenna wire or
the halyards *never* fall under strain from the tree as it moves in the
wind. Even small trees can exert tons of pressure on the wire or
On Sun, 2008-07-27 at 04:14, David Woolley (E.L) wrote:
Benny Aumala wrote:
http://www.antennalaunchers.com/csv19/index.htm
That URL seems to lead to a cybersquatter (the sort that gives you
their search engine results).
It works if you delete the /csv19/index.htm part.
It might,
David Woolley (E.L) wrote:
Benny Aumala wrote:
http://www.antennalaunchers.com/csv19/index.htm
That URL seems to lead to a cybersquatter (the sort that gives you
their search engine results).
It's http://www.antennalaunchers.com/csv19/index.html - with an 'l' at
the end.
It might,
.
Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Alan Bloom
Sent: Sunday, July 27, 2008 1:29 PM
To: David Woolley (E.L)
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft Antennas in trees
On Sun, 2008-07-27 at 04:14, David Woolley (E.L) wrote:
Benny
i watched an arborist doing some work next door and he showed me the old
man's toss. it is a between-the-legs toss and it really works well for me
compared to the lariat toss.
it uses the arms, legs and back and is directly in line with your spine.
i went home and with very little practice i
On Sun, 27 Jul 2008 11:47:54 -0700, Ron D'Eau Claire wrote:
The counterweights need to be heavy enough to hold the antenna, but not
heavier than needed for that. When trees whip in the winds, the inertia
of the counterweights can produce shock loads many, many times greater
than the weights
I've gotten my fair share of storms here too and rather than go the
route of counter weights since I had to kinda skirt the side of a big
cedar I opted for a rope method.
I ended up tying two ropes together at the center point of the dipole.
Then ran the rope up into the trees. The rope bears
Ron,
The information which I have sent to those who expressed interest contained
a sketch which I believe would not be allowed in a post to the List. I could
replace the diagram by some text if you think that I should post it, but
unfortunately I won't be able to do that today. I hope that
Sorry for the off topic query but a few years ago I saw on this reflector a
link to a site which showed a design for a system of two poles and cords
which was used to drop a weight over a tree bow and get further up the tree
by stages.
I cannot use a projectile since there is a house immediately
-Original Message-
Sorry for the off topic query but a few years ago I saw on this
reflector a
link to a site which showed a design for a system of two poles and cords
which was used to drop a weight over a tree bow and get further up the
tree
by stages.
I cannot use a projectile since
All you need is a dog, a cat and a rifle.
Steve Ellington
[EMAIL PROTECTED]
- Original Message -
From: Martin Evans [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, July 25, 2008 12:46 PM
Subject: [Elecraft] Elecraft Antennas in trees
Sorry for the off topic query
Hi Martin,
By any chance are you thinking about the method I use? We discussed it a few
years ago, please contact me off-List if you think that it might be. I have
since 'refined' the hardware used to get up 100ft plus pine trees in roughly
25ft stages, which also allows accurate positioning of
Whatziz this off line stuff Geoff? I'm sure a number of us are
interested. I know I am.
Don't be afraid of the self-appointed list cops. There's only one
moderator and he's heartily endorsed such digressions within reason.
Experience shows that if it's something an Elecraft rig owner might be
]
To: [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Friday, September 10, 2004 4:08 AM
Subject: Re: [Elecraft] Elecraft- Antennas and trees
We use slingshots and archery in the forest (but they are generally
illegal
inside city limits or in residential areas), or Pneumatic Tennis Ball
Launchers
Snip
Bad news. Very sorry indeed.
I agree with Ron about strain relief when using trees. A MUST in my
opinion.
Here I have a rope catenary up about 80 feet and about 200ft long, one end
to a pine tree - the other to a hardwood. Both dance in the 100 mph winds
we
get at times, nothing like
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