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Date: Wed, 29 Dec 2010 10:20:23 +0000 (GMT)
From: Chris Osborn <g3xiz@yahoo.co.uk>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: VLF Loading Coil Problems - G3XIZ
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It's varnished wooden supports with hexagonal end caps Roger.
However it worked a treat for a while !
Whatever the problem it suddenly occurred . . .

73 Chris G3XIZ





________________________________
From: Roger Lapthorn <rogerlapthorn@gmail.com>
To: rsgb_lf_group@blacksheep.org
Sent: Wed, 29 December, 2010 10:14:10
Subject: Re: LF: VLF Loading Coil Problems - G3XIZ

Not am expert on large coils Chris, but could it be the former material is=
=20
lossy?

73s
Roger G3XBM


On 29 December 2010 08:26, Chris Osborn <g3xiz@yahoo.co.uk> wrote:

LF,
>
>Many thanks for all efforts, advice and suggestions from members of the=
 group.
>I shall E-mail them personally within the next few days.
>
>I spent several hours yesterday re-winding a section of my VLF loading co=
il.
>There are abour 1200 turns of  0.2 mm wire which had to be hand wound at=
 a rate=20
>of 4 turns per minute (max).
>
>I was disappointed (to say the least) when the coil resonated at the corr=
ect=20
>frequency but had a very low Q.
>Either there's a short-circuit in the other section of the coil or I've=
=20
>introduced a short into the newly re-wound part.
>In any event I am QRT until I can sort the problem.
>
>I have social engagements today and will take another look at it tomorrow=
.
>
>73
>Chris G3XIZ
>
>
>
>


--=20
g3xbm-qrp.blogspot.com/
www.g3xbm.co.uk
www.youtube.com/user/g3xbm
G3XBM   GQRP 1678    ISWL G11088



     =20

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<html><head><style type=3D"text/css"><!-- DIV {margin:0px;} --></style></h=
ead><body><div style=3D"font-family:arial,helvetica,sans-serif;font-size:1=
0pt"><div>It's varnished wooden supports with hexagonal end caps Roger.<br=
>However it worked a treat for a while !<br>Whatever the problem it sudden=
ly occurred . . .<br><br>73 Chris G3XIZ<br><br></div><div style=3D"font-fa=
mily: arial,helvetica,sans-serif; font-size: 10pt;"><br><div style=3D"font=
-family: times new roman,new york,times,serif; font-size: 12pt;"><font fac=
e=3D"Tahoma" size=3D"2"><hr size=3D"1"><b><span style=3D"font-weight: bold=
;">From:</span></b> Roger Lapthorn &lt;rogerlapthorn@gmail.com&gt;<br><b><=
span style=3D"font-weight: bold;">To:</span></b> rsgb_lf_group@blacksheep.=
org<br><b><span style=3D"font-weight: bold;">Sent:</span></b> Wed, 29 Dece=
mber, 2010 10:14:10<br><b><span style=3D"font-weight: bold;">Subject:</spa=
n></b> Re: LF: VLF Loading Coil Problems - G3XIZ<br></font><br>Not am expe=
rt on large coils Chris, but
 could it be the former material is lossy?<br><br>73s<br>Roger G3XBM<br><b=
r><div class=3D"gmail_quote">On 29 December 2010 08:26, Chris Osborn <span=
 dir=3D"ltr">&lt;<a rel=3D"nofollow" ymailto=3D"mailto:g3xiz@yahoo.co.uk"=
 target=3D"_blank" href=3D"mailto:g3xiz@yahoo.co.uk">g3xiz@yahoo.co.uk</a>=
&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; bord=
er-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div style=
=3D"font-family: arial,helvetica,sans-serif; font-size: 10pt;"><div>LF,<br=
><br>
Many thanks for all efforts, advice and suggestions from members of the gr=
oup.<br>I shall E-mail them personally within the next few days.<br><br>I=
 spent several hours yesterday re-winding a section of my VLF loading coil=
.<br>
There are abour 1200 turns of&nbsp; 0.2 mm wire which had to be hand wound=
 at a rate of 4 turns per minute (max).<br><br>I was disappointed (to say=
 the least) when the coil resonated at the correct frequency but had a ver=
y low Q.<br>
Either there's a short-circuit in the other section of the coil or I've in=
troduced a short into the newly re-wound part.<br>In any event I am QRT un=
til I can sort the problem.<br><br>I have social engagements today and wil=
l take another look at it tomorrow.<br>
<br>73<br>Chris G3XIZ<br><br><br></div>
</div><br>



      </div></blockquote></div><br><br clear=3D"all"><br>-- <br><a rel=3D"=
nofollow" target=3D"_blank" href=3D"http://g3xbm-qrp.blogspot.com/">g3xbm-=
qrp.blogspot.com/</a><br><a rel=3D"nofollow" target=3D"_blank" href=3D"htt=
p://www.g3xbm.co.uk">www.g3xbm.co.uk</a><br>
<a rel=3D"nofollow" target=3D"_blank" href=3D"http://www.youtube.com/user/=
g3xbm">www.youtube.com/user/g3xbm</a><br><a rel=3D"nofollow" target=3D"_bl=
ank" href=3D"http://vlf_grabber"></a>G3XBM&nbsp;&nbsp; GQRP 1678&nbsp;&nbs=
p;&nbsp; ISWL G11088<br>
</div></div>
</div><br>



      </body></html>

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