Elecraft- Antennas and trees

[Martin.Evans]

 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 your winds. The rope is 6mm triple braided
ultraviolet resistant for marine use. The pulleys also for marine use
(sheets) with ball bearings and of the ENCLOSED type so that the chance of
a
flying twig jamming a pulley is much reduced. I had this happen years ago
when using "open" pulleys. My counterweight is like Ron's but low tech.
Don't have the bucket yet.

Good luck and 73,

Geoff    GM4ESD

Snip

Geoff, how did you get a fixing on the tree at 80 feet! I have a poplar
tree here at about 60 feet high but only got a fixing at 30 feet. I lost my
bottle to climb any higher hi.

Martin
M0KWV
K1 # 1534



Why not take a look at our Web site?
http://www.simoncarves.com

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[Hisashi T Fujinaka]

On Thu, 9 Sep 2004 [hidden email] wrote:

> Geoff, how did you get a fixing on the tree at 80 feet! I have a poplar
> tree here at about 60 feet high but only got a fixing at 30 feet. I lost my
> bottle to climb any higher hi.

A slingshot, several sizes of fishing line (start with the small stuff),
and a lead fishing weight. We've gotten it up ~100 feet. You tie the
small fishing line to the weight, shoot it up, then bigger line and pull
the smaller line up, and then tie rope to the bigger line.

Of course, I don't know if slingshots are illegal where you are. Here,
they sell them to kids.

--
Hisashi T Fujinaka - [hidden email]
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
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[Alan WB6ZQZ]

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 (legal in most areas). The pneumatics are safer than either
arrows or lead sinkers, and capable of getting to 200 feet or more in
height if needed.

More info at http://www.qsl.net/wb6zqz/antlaunching.html

-- Alan

At 07:50 AM 9/9/2004, Hisashi wrote:

>On Thu, 9 Sep 2004 [hidden email] wrote:
>
>>Geoff, how did you get a fixing on the tree at 80 feet! I have a poplar
>>tree here at about 60 feet high but only got a fixing at 30 feet. I lost my
>>bottle to climb any higher hi.
>
>A slingshot, several sizes of fishing line (start with the small stuff),
>and a lead fishing weight. We've gotten it up ~100 feet. You tie the
>small fishing line to the weight, shoot it up, then bigger line and pull
>the smaller line up, and then tie rope to the bigger line.
>
>Of course, I don't know if slingshots are illegal where you are. Here,
>they sell them to kids.
>
>--
>Hisashi T Fujinaka - [hidden email]
>BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte

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[Geoffrey Mackenzie-Kennedy-2]

Hello Alan,

Carrying or using a slingshot is illegal anywhere here in Scotland. Use of
archery hardware has to be cleared by the police. The use of tennis balls is
not restricted in any way. Maybe your website will answer my questions ( I
shall be visiting) :
          With a Pneumatic Tennis Ball Launcher, can one put a line over a
chosen branch at a desired spot , say 100 - 150ft up, assuming that a clear
line of sight exists between launcher and chosen branch , and no wind gusts?
And what is done to prevent the ball spinning around a branch and thereby
making the effort useless ? I appreciate that practice makes perfect. I do
know that lobbing a line over the top of a tree can be of little use except
for temporary set-ups. By chosen branch I mean a branch that allows the
final catenary / support rope to exit the tree without chafing against other
branches or foliage in any weather conditions.
I am looking for a method to replace the way I have been doing things which
is a little slow - although I can put a line exactly where I want it at
120ft up. Height is not really a problem.

73,    Geoff   GM4ESD

----- Original Message -----
From: "Alan WB6ZQZ" <[hidden email]>
To: <[hidden email]>; <[hidden email]>
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 (legal in most areas). The pneumatics are safer than either
> arrows or lead sinkers, and capable of getting to 200 feet or more in
> height if needed.
>
> More info at http://www.qsl.net/wb6zqz/antlaunching.html
>
> -- Alan
>
> At 07:50 AM 9/9/2004, Hisashi wrote:
> >On Thu, 9 Sep 2004 [hidden email] wrote:
> >
> >>Geoff, how did you get a fixing on the tree at 80 feet! I have a poplar
> >>tree here at about 60 feet high but only got a fixing at 30 feet. I lost

my
> >>bottle to climb any higher hi.
>

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