Message-ID: <003c01c4fee4$1a475ea0$4b540150@captbrian>
From: "captbrian" <captbrian@ukonline.co.uk>
To: rsgb_lf_group@blacksheep.org
References: <Pine.LNX.3.95.1050113192427.286A-100000@noname.nodomain.nowhere> <000901c4feac$b818ce80$6401a8c0@eagles> <001f01c4fee1$a6b716d0$d7c7f9c3@preinstapdq0tf>
Date: Thu, 20 Jan 2005 11:35:10 -0000
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Subject: LF: Re: Re: Coil Winding,  de  VY1JA
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I scanned the whole of that page but all references to "spoler" seem to have
become "unspolen"

Bryan G3GVB
----- Original Message -----
From: Niels Rudberg Jørgensen <niels.rudberg@post.tele.dk>
To: <rsgb_lf_group@blacksheep.org>
Sent: Thursday, January 20, 2005 11:17 AM
Subject: LF: Re: Coil Winding, de VY1JA


>
> ----- Original Message -----
> From: "J. Allen" <vy1ja@northwestel.net>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Thursday, January 20, 2005 5:58 AM
> Subject: LF: Coil Winding, de VY1JA
>
>
> > LF,
> >
> > I have just spent three hours trying to find any practical information
on
> > the Web on how to wind a honeycomb coil at home.  I can see pictures of
> the
> > finshed coils but without some step by step photos of how it was done,
the
> > pix of the finished product does no good here.
> >
> > There is no rush on this, because in the absence of information, I can
use
> > existing materials and make a less efficient single layer solenoid with
> one
> > diameter conductor spacing, which will get me on the air for now.
> >
> > Does anyone know where the honeycomb coil winding data can be found?
> >
> > J.
> >
> >
> ~Hello!
> Why honeycomb coil, basket weave etc?
> In my humble opinion, the best way of making a high-Q coil or variometer
> is to use the "pyramid" or "bank" winding method.
> You may see the method mentioned in Terman, 1943-edition, pg. 84.
> This method was used for decades by the manufacturers of e.g. marine radio
> transmitters, primarily because it combines achievable high Q and modest
> physical dimensions.
> You may find detailed information on my home page: www.oz8nj.dk
> This homepage is in danish language, but if you look after "spoler"
> (=coils),
> you will find a description in english and a number of photos.
> BTW, talking of the separation of coil turns, do not believe in the
> "one-diameter
> separation", -- this idea is probable ok for short wave, but not in our
> case.
> I use RF Litz wire for my coils, I have, however seen old coils wound with
> solid cotton-covered copper wire. It seems to me, that one should not
> over-estimate the proximity effect.
> 73 =
> Niels, OZ8NJ+
>
>
>