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From: Bob Raide <rjraide@hotmail.com>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Date: Fri, 25 Oct 2013 17:05:56 -0400
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Subject: RE: LF: air solenoids
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Warren=3B
Very true Warren.  LF-MF whatever.  I have a KW spark transmitter and was a=
lways worried about it radiating and coupling to one of my dipoles or whate=
ver and cause substantial havoc!  Not so! For you to put out any kinda sign=
al you need a somewhat
 RESONANT  antenna.  Just hooking a piece of wire to it only caused minimal=
 radiation-Bob
=20
Date: Fri=2C 25 Oct 2013 16:49:50 -0400
From: wd2xgj@gmail.com
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: air solenoids

Christoph=2C    A while back someone on the US longwave reflector posted th=
e result of an experiment. They took a receiver to the site of a high power=
 Tesla coil operating at LF=2C I believe it was being driven at 175kHz. the=
y expected to hear it at some distance but were surprised to find out they =
could only hear the Tesla coil at very short distances. It seems that a coi=
l by itself is an extremely poor radiator at LF!  It is unknown to me if th=
ere was any earth connection to the Tesla coil=2C perhaps only through the =
mains connection.=0A=

73 Warren


On Fri=2C Oct 25=2C 2013 at 4:20 PM=2C Christoph Schumacher <chris-schum@t-=
online.de> wrote:
=0A=
=0A=
=0A=
=0A=
  =0A=
=0A=
=0A=
no=2C cylindrical coils
=0A=

=0A=
Am 25.10.2013 22:11=2C schrieb Graham:=0A=
=0A=
  =0A=
  =0A=
  toroidal ?=0A=
  =0A=
 =20
=0A=
  =0A=
  =0A=
  From: Christoph Schumacher =0A=
  Sent: Friday=2C October 25=2C 2013 8:53 PM=0A=
  To: rsgb_lf_group@blacksheep.org=0A=
  =0A=
  Subject: LF: air solenoids=0A=
  =0A=
  =0A=
 =20
=0A=
  =0A=
  Dear all=2C
=0A=
is there anyone who was concerned sometime with the self radiating=0A=
properties of single layer air solenoids without any piece of antenna=0A=
wire?=20
=0A=
 =20
=0A=
73 dl7saq=2C Chris=0A=
=0A=

=0A=
=0A=
=0A=


--=20
73 Warren K2ORS
                WD2XGJ=20
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

 =0A=
 		 	   		  =

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<body class=3D'hmmessage'><div dir=3D'ltr'>Warren=3B<BR>Very true Warren.&n=
bsp=3B LF-MF whatever.&nbsp=3B I have a KW spark transmitter and was always=
 worried about it radiating and coupling to one of my dipoles or whatever a=
nd cause substantial havoc!&nbsp=3B Not so! For you to put out any&nbsp=3Bk=
inda signal you need a somewhat<BR>&nbsp=3BRESONANT&nbsp=3B antenna.&nbsp=
=3B Just hooking a piece of wire to it only caused minimal radiation-Bob<br=
>&nbsp=3B<BR><div><hr id=3D"stopSpelling">Date: Fri=2C 25 Oct 2013 16:49:50=
 -0400<br>From: wd2xgj@gmail.com<br>To: rsgb_lf_group@blacksheep.org<br>Sub=
ject: Re: LF: air solenoids<br><br><div dir=3D"ltr">Christoph=2C<div>&nbsp=
=3B &nbsp=3B A while back someone on the US longwave reflector posted the r=
esult of an experiment. They took a receiver to the site of a high power Te=
sla coil operating at LF=2C I believe it was being driven at 175kHz. they e=
xpected to hear it at some distance but were surprised to find out they cou=
ld only hear the Tesla coil at very short distances. It seems that a coil b=
y itself is an extremely poor radiator at LF! &nbsp=3BIt is unknown to me i=
f there was any earth connection to the Tesla coil=2C perhaps only through =
the mains connection.</div>=0A=
<div><br></div><div>73 Warren</div><div><br></div><div><br></div></div><div=
 class=3D"ecxgmail_extra"><br><br><div class=3D"ecxgmail_quote">On Fri=2C O=
ct 25=2C 2013 at 4:20 PM=2C Christoph Schumacher <span dir=3D"ltr">&lt=3B<a=
 href=3D"mailto:chris-schum@t-online.de" target=3D"_blank">chris-schum@t-on=
line.de</a>&gt=3B</span> wrote:<br>=0A=
<blockquote class=3D"ecxgmail_quote" style=3D"padding-left: 1ex=3B border-l=
eft-color: rgb(204=2C 204=2C 204)=3B border-left-width: 1px=3B border-left-=
style: solid=3B"><u></u>=0A=
=0A=
=0A=
  =0A=
=0A=
<div>=0A=
no=2C cylindrical coils<br>=0A=
<br>=0A=
Am 25.10.2013 22:11=2C schrieb Graham:=0A=
<div><div class=3D"h5"><blockquote>=0A=
  =0A=
  =0A=
  <div>toroidal ?</div>=0A=
  <div style=3D"font: 10pt/normal Tahoma=3B font-size-adjust: none=3B font-=
stretch: normal=3B">=0A=
  <div><br>=0A=
  </div>=0A=
  <div style=3D"background: rgb(245=2C 245=2C 245)=3B">=0A=
  <div><b>From:</b> <a title=3D"mailto:chris-schum@t-online.de  CTRL + Clic=
k to follow link" href=3D"mailto:chris-schum@t-online.de" target=3D"_blank"=
>Christoph Schumacher</a> </div>=0A=
  <div><b>Sent:</b> Friday=2C October 25=2C 2013 8:53 PM</div>=0A=
  <div><b>To:</b> <a title=3D"rsgb_lf_group@blacksheep.org" href=3D"mailto:=
rsgb_lf_group@blacksheep.org" target=3D"_blank">rsgb_lf_group@blacksheep.or=
g</a>=0A=
  </div>=0A=
  <div><b>Subject:</b> LF: air solenoids</div>=0A=
  </div>=0A=
  </div>=0A=
  <div><br>=0A=
  </div>=0A=
  <p class=3D"ecxMsoNormal"><span lang=3D"EN-GB">Dear all=2C<br>=0A=
is there anyone who was concerned sometime with the self radiating=0A=
properties of single layer air solenoids without any piece of antenna=0A=
wire? <br>=0A=
  <br>=0A=
73 dl7saq=2C Chris</span></p>=0A=
</blockquote>=0A=
<br>=0A=
</div></div></div>=0A=
=0A=
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>73 Warren K2=
ORS<br>&nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=
=3B WD2XGJ <br>&nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=
=3B &nbsp=3B WD2XSH/23<br>&nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbs=
p=3B &nbsp=3B &nbsp=3B WE2XEB/2<br>&nbsp=3B &nbsp=3B &nbsp=3B &nbsp=3B &nbs=
p=3B &nbsp=3B &nbsp=3B &nbsp=3B WE2XGR/1<br><br>&nbsp=3B=0A=
</div></div> 		 	   		  </div></body>
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