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Re: Topband: Pneumatic device for throwing antenna wire over the top ofa

To: <sebdesn@comcast.net>, Topband <topband@contesting.com>
Subject: Re: Topband: Pneumatic device for throwing antenna wire over the top ofa tree
From: Charles Moizeau <w2sh@msn.com>
Date: Thu, 14 Oct 2010 16:23:08 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
A disadvantage of using a fishing reel to store the line is that there is no 
easy way to limit the maximum travel of the projectile.  Thus the line can end 
up in a tree beyond the targeted one, or in any other undesired place.
 
A better approach is to estimate the distance to the target and lay out that 
much line in a back and forth (multiple Ss) pattern on a plastic tarpaulin.  I 
use a 12' x 20' tarpaulin, folded to quarter size to present a 6' x 10' 
surface.  The tarpaulin offers the line a friction-free surface.  Line that is 
not laid out is stored on a 9" diameter kite flyer's hoop spool.  After a shot 
is made and the laid-out line is in the air, the hoop spool jumps up, a turn or 
two of additional line is dispatched, and the weight of the spool and stored 
line gently brakes the projectile to limit its travel.
 
I prefer a compound bow and weighted arrow, for the considerable length-to-mass 
ratio of an arrow facilitates its passage through leaves and twigs whereas a 
lead weight is likely to ricochet wildly after striking any interfering object.
 
73,
 
Charles, W2SH
 
 
> From: sebdesn@comcast.net
> To: topband@contesting.com
> Date: Thu, 14 Oct 2010 08:28:41 -0600
> Subject: Re: Topband: Pneumatic device for throwing antenna wire over the top 
> ofa tree
> 
> I went to Walmart and bought a cheap spinning reel(Attach it to the sling
> shot) . a sling shot, a small lead fishing weight. and some light fishing
> line line.
> Its very easy to shoot it a hundred feet over a tree and then attach rope to
> it, to pull wire over. also very reasonable price/ wise...
> Bud WOHG
> -
> 
> Dear all
> 
> some time ago there were some discussions on reflector about how to
> make a pneumatic device that could be used to launch a fishing line
> with sinker over a top of a tree for attaching wire antennas..
> 
> 
> 73 de VK2CCC
> 
> www.qrz.lt/ly1df
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
> 
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
                                          
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK

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