[TowerTalk] adjusting insulated wire dipole

[Keith Dutson]

Once tuned as desired, why not cut the wire at the outer bend point?  The
only negative that comes to mind is if the resonant frequency rises over
time due to environmental changes (e.g. new metal structures erected
nearby).

Keith
NM5G
VP8DXL

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Jim Lux
Sent: Wednesday, December 01, 2004 9:18 AM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] adjusting insulated wire dipole

Bringing up the interesting question as to why this incredibly useful
technique isn't mentioned more prominently in the ARRL handbook?

There's lots of talk about trimming/pruning the length of an antenna, which
certainly implies cutting off the wire.  I haven't searched the latest
handbook, but in my 10 year old one, I don't see any mention of folding and
taping/twisting.

----- Original Message -----
From: <corneliuspaul at gmx.net>
To: <towertalk at contesting.com>
Sent: Wednesday, December 01, 2004 4:25 AM
Subject: Re: [TowerTalk] adjusting insulated wire dipole


> At 13:08 01.12.2004, dennis o'connor wrote:
> >That is the way I have always done it, and everyone I know does it 
> >that way... Yes, there will be a small increase in capacitive 
> >loading, but you won't notice it as you adjust the lengths... Once 
> >you have it tuned, wrap the extra wire tightly enough that it won't 
> >blow in the wind, leave it
and
> >go operate...
> >
> >Denny - k8do
>
>
> its also the way I adjust all the driven elements in the spiderbeam 
> and every customer has done so since we started distributing the kits 
> - works just fine for everyone
>
> 73 Con DF4SA


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