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From: "MIKE REID" <we0h1@msn.com>
To: <rsgb_lf_group@blacksheep.org>
References: <009f01c6aa0e$aedf1f40$6501a8c0@eagles>
Date: Tue, 18 Jul 2006 00:52:24 -0500
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Subject: LF: Re: RF Ammeter
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I would try a wet tile saw, the kind you use to cut floor tiles for the =
wife...LOL!!!

Mike
WE0H
WD2XGI

  ----- Original Message -----=20
  From: J. Allen
  To: LF (RSGB)<mailto:rsgb_lf_group@blacksheep.org>=20
  Sent: Monday, July 17, 2006 9:05 PM
  Subject: LF: RF Ammeter


  Scott and Friends,

  The ammeter check results are in.... Dead Meter.

  I went over the antenna connections cleaning and soldering and a small =

  amount of retuning was required.

  Someone asked how things are set up now...

  There are two coil forms involved.  On the first is a bifilar winding =
with=20
  ten turns each for the coaxial feed and for the antenna feed.  One end =
of=20
  each of these windings is grounded.

  The second form has the loading inductor for the antenna.  It consists =
of a=20
  single layer close wound solenoid with 40 turns of ~16 Formvar coated =
wire=20
  two inches long and 10-3/4 inches in diameter.  The entire coil =
exactly=20
  resonates the antenna, without taps and without using the Variometer.

  It is a very simple and straightforward setup.  The fact that there =
should=20
  be a lower antenna resistance bothers me, but NOT enough to play with =
it.=20
  That antenna plays.  I may make up an antenna current meter from the =
LF=20
  Today book.  What cuts the toroid core material and leaves a sooth cut =
or am=20
  I dreaming?

  J.=20


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<DIV>
<DIV>I would try a wet tile saw, the kind you use to cut floor tiles for =
the=20
wife...LOL!!!</DIV>
<DIV>&nbsp;</DIV>
<DIV>Mike</DIV>
<DIV>WE0H</DIV>
<DIV>WD2XGI</DIV>
<DIV>&nbsp;</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>From:</B> J. Allen</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
  title=3Dmailto:rsgb_lf_group@blacksheep.org=20
  href=3D"mailto:rsgb_lf_group@blacksheep.org">LF (RSGB)</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, July 17, 2006 =
9:05 PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> LF: RF Ammeter</DIV>
  <DIV><BR></DIV>Scott and Friends,<BR><BR>The ammeter check results are =
in....=20
  Dead Meter.<BR><BR>I went over the antenna connections cleaning and =
soldering=20
  and a small <BR>amount of retuning was required.<BR><BR>Someone asked =
how=20
  things are set up now...<BR><BR>There are two coil forms =
involved.&nbsp; On=20
  the first is a bifilar winding with <BR>ten turns each for the coaxial =
feed=20
  and for the antenna feed.&nbsp; One end of <BR>each of these windings =
is=20
  grounded.<BR><BR>The second form has the loading inductor for the=20
  antenna.&nbsp; It consists of a <BR>single layer close wound solenoid =
with 40=20
  turns of ~16 Formvar coated wire <BR>two inches long and 10-3/4 inches =
in=20
  diameter.&nbsp; The entire coil exactly <BR>resonates the antenna, =
without=20
  taps and without using the Variometer.<BR><BR>It is a very simple and=20
  straightforward setup.&nbsp; The fact that there should <BR>be a lower =
antenna=20
  resistance bothers me, but NOT enough to play with it. <BR>That =
antenna=20
  plays.&nbsp; I may make up an antenna current meter from the LF =
<BR>Today=20
  book.&nbsp; What cuts the toroid core material and leaves a sooth cut =
or am=20
  <BR>I dreaming?<BR><BR>J. =
<BR><BR><BR><BR></BLOCKQUOTE></DIV></BODY></HTML>

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