Towertalk
[Top] [All Lists]

Re: [TowerTalk] Loading Coils

To: David Gilbert <ab7echo@gmail.com>
Subject: Re: [TowerTalk] Loading Coils
From: Stan Stockton <wa5rtg@gmail.com>
Date: Fri, 1 Aug 2025 18:53:45 -0500
List-post: <mailto:towertalk@contesting.com>
Those look very nice.

I’ve made a few coils for 40m elements and 160m loading coils using dead soft 
1/4” aluminum tubing and a Crisco can used for a form.  The spacers were made 
from strips of Delrin about 3/4” wide and maybe 1/4”-3/8” thick.  Drill holes 
in the Delrin with whatever spacing you want, slice it through the middle of 
the holes from one end to the other with a band saw and hold it together with 
zip ties once all the turns are encapsulated.  Three or four of these spacers 
have worked well for a good sized coil.

73…Stan, K5GO


Sent from my iPhone

> On Aug 1, 2025, at 4:55 PM, David Gilbert <ab7echo@gmail.com> wrote:
> 
> 
> If you have access to a 3D printer this might be an inexpensive alternative:
> 
> https://youtu.be/qAgF9Mzr8XM
> 
> or
> 
> https://youtu.be/S6spyk1GRoo
> 
> Personally, I'd go with the version that has a slight taper.  In most cases 
> it would make no difference at all, and it's quite a bit simpler.
> 
> OpenSCAD is free and extremely easy to use, and the parametric design allows 
> you to make a coil exactly how you want it.  If anyone needs it, I can make a 
> video that walks you through the entire process.
> 
> Dave   AB7E
> 
> 
> 
>> On 8/1/2025 1:40 PM, john@kk9a.com wrote:
>> That is good information.  Without the right equipment they would be a
>> challenge to homebrew.  Thanks for sharing!
>> 
>> John KK9A
>> 
>> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
<Prev in Thread] Current Thread [Next in Thread>