MIME-Version: 1.0
In-Reply-To: <54368434.2000405@gmail.com>
References: <54368434.2000405@gmail.com>
Date: Thu, 9 Oct 2014 10:12:30 -0400
Message-ID: <CAMFjj70EMmWY=cY3hWSsbDKJ9XmUp3qi=VbXbLOwkCr1SjSviQ@mail.gmail.com>
From: Warren Ziegler <wd2xgj@gmail.com>
To: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: ELF communications ?
Content-Type: multipart/alternative; boundary=047d7bd6c6e0dfd1470504fe0556
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: RO

--047d7bd6c6e0dfd1470504fe0556
Content-Type: text/plain; charset=UTF-8

Stefan,

   Let us know the result!
The U.S. Navy had a facility at Clam Lake Wisconsin using 3 MW and a 45km
long antenna they achieved 8W ERP at 76Hz, see more at:
http://fas.org/nuke/guide/usa/c3i/fs_clam_lake_elf2003.pdf

73 Warren


On Thu, Oct 9, 2014 at 8:48 AM, DK7FC <73dk7fc@googlemail.com> wrote:

> Hi ELF,
>
> This afternoon i'm attempting to transmit on my INV-L on 136.172 Hz (not
> kHz!). Just preparing my H bridge VLF PA and i intend to use an old 10 kV
> transformer which i got from an old furnance (to inflame the oil stream),
> see https://dl.dropboxusercontent.com/u/19882028/VLF/10kV%20Trafo.jpg
>
> Will that work on 2.4 km distance? It's well inside the near field. Which
> mode could be possible? QRSS-3? CW?
> The 2200000 m band, or 2.2 Mm band :-) A near field of 350 km !!
> I hope i can apply 10 kV to the antenna. It will not be resonated. And
> maybe i will see harmonics as well, because the input is rectangular...
>
> 73, Stefan/DK7FC
>
>


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

--047d7bd6c6e0dfd1470504fe0556
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Stefan,<div><br></div><div>=C2=A0 =C2=A0Let us know the re=
sult!=C2=A0</div><div>The U.S. Navy had a facility at Clam Lake Wisconsin u=
sing 3 MW and a 45km long antenna they achieved 8W ERP at 76Hz, see more at=
:</div><div><a href=3D"http://fas.org/nuke/guide/usa/c3i/fs_clam_lake_elf20=
03.pdf">http://fas.org/nuke/guide/usa/c3i/fs_clam_lake_elf2003.pdf</a><br><=
/div><div><br></div><div>73 Warren</div><div><br></div></div><div class=3D"=
gmail_extra"><br><div class=3D"gmail_quote">On Thu, Oct 9, 2014 at 8:48 AM,=
 DK7FC <span dir=3D"ltr">&lt;<a href=3D"mailto:73dk7fc@googlemail.com" targ=
et=3D"_blank">73dk7fc@googlemail.com</a>&gt;</span> wrote:<br><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex">Hi ELF,<br>
<br>
This afternoon i&#39;m attempting to transmit on my INV-L on 136.172 Hz (no=
t kHz!). Just preparing my H bridge VLF PA and i intend to use an old 10 kV=
 transformer which i got from an old furnance (to inflame the oil stream), =
see <a href=3D"https://dl.dropboxusercontent.com/u/19882028/VLF/10kV%20Traf=
o.jpg" target=3D"_blank">https://dl.dropboxusercontent.<u></u>com/u/1988202=
8/VLF/10kV%<u></u>20Trafo.jpg</a><br>
<br>
Will that work on 2.4 km distance? It&#39;s well inside the near field. Whi=
ch mode could be possible? QRSS-3? CW?<br>
The 2200000 m band, or 2.2 Mm band :-) A near field of 350 km !!<br>
I hope i can apply 10 kV to the antenna. It will not be resonated. And mayb=
e i will see harmonics as well, because the input is rectangular...<br>
<br>
73, Stefan/DK7FC<br>
<br>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>73 Warren K2=
ORS<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WD2XGJ <br>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WD2XSH/23<br>=C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WE2XEB/2<br>=C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WE2XGR/1<br><br>=C2=A0
</div>

--047d7bd6c6e0dfd1470504fe0556--