From: uwe-jannsen@kabelmail.de
To: rsgb_lf_group@blacksheep.org
Message-ID: <3b90ebeb91e44829a9f470214c4894a6@kabelmail.de>
Date: Thu, 03 Mar 2011 16:19:55 +0100
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Subject: Re: LF: Who is transmitting on 8970.022 Hz??
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Hi all,=20

its no longer a secret :=20

Stefan and Markus found a carrier at 8970,022Hz on Stefans and Gerhards gr=
abber and I had to confess that its origin is my QTH because the TX was sw=
itched on at 1740UTC yesterday and that matches the visibility of the carr=
ier on Gerhards grabber.=20

My aerial: pse see=20

http://dj8wx-dl.de/hompage500kHz/TX%20equipment.htm=20

second last pic on the site. The 23m long wire has been lengthened by an=
 other 20m.=20

The radiasls have a overall length of=A0 500m.=20

I tried a measuring of the current between=A0 the footpoint of the matchin=
g coils and the radials:=20

Sri, but the meter doesnt show more than 200mA and its far > than that.=20

The TX bumps 7,5A at 284Vpp (753Wrms) into the field coil of 134uH (Z 7,5=
 Ohm).=20

The diameter of the circuit single layer winding coils: on average 60cm.=
=20

inductivity: 245mH.=20

The generator is a homebrew BPU lf-exciter with the possibility of all usu=
al kinds of modulations. =20

The class E PA makes 2,4kWrms on NF. I could get 1700Wrms out of this (mis=
used) disco PA on 9kHz.=20

When I did so the consequence was:=A0 One couldnt touch any garden hand to=
ols or other things longer than 50cm.=20

Txing with 750W: My XYL doesnt shriek any more when working in the garden=
 and touching p.e. the barrow.=20

Best regards=20

Uwe/dj8wx still txing a carrier on 8970,022Hz. In some days Ill send in qr=
s6000.=20

  Von: rsgb_lf_group@blacksheep.org
 Gesendet: 02.03.2011 16:20
 An: rsgb_lf_group@blacksheep.org
 Betreff: LF: Who is transmitting on 8970.022 Hz??

 VLF,

 Someone is transmitting on 8970.022 Hz, visible in my "DFCW-6000" window=
=20
 and visible at OE3GHB! It is neither Markus nor Ossi nor Gerhard nor me,=
=20
 so who is it??? :-)
 Frequency is very accurate over time!

 On 8969.97 i am doing a local test so pse don't wonder.

 73, Stefan/DK7FC

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<span style=3D"font-family: Arial; font-size: 13px;"><br />
<p>Hi all,</p>
<p>&nbsp;</p>
<p><span>its no longer a secret :</span></p>
<p><span>Stefan and Markus found a carrier at 8970,022Hz on Stefans and Ge=
rhards grabber and I had to confess that its origin is my QTH because the=
 TX was switched on at 1740UTC yesterday and that matches the visibility=
 of the carrier on Gerhards grabber.</span></p>
<p><span>&nbsp;</span></p>
<p><span>My aerial: pse see</span></p>
<p><span>&nbsp;</span></p>
<p><a href=3D"http://dj8wx-dl.de/hompage500kHz/TX%20equipment.htm"><span>h=
ttp://dj8wx-dl.de/hompage500kHz/TX%20equipment.htm</span></a></p>
<p>&nbsp;</p>
<p><span>second last pic on the site. The 23m long wire has been lengthene=
d by an other 20m.</span></p>
<p><span>The radiasls have a overall length of&nbsp; 500m.</span></p>
<p><span>&nbsp;</span></p>
<p><span>I tried a measuring of the current between&nbsp; the footpoint of=
 the matching coils and the radials:</span></p>
<p><span>Sri, but the meter doesnt show more than 200mA and its far &gt;=
 than that.</span></p>
<p><span>&nbsp;</span></p>
<p><span>The TX bumps 7,5A at 284Vpp (753Wrms) into the field coil of 134u=
H (Z 7,5 Ohm).</span></p>
<p><span>&nbsp;</span></p>
<p><span>The diameter of the circuit single layer winding coils: on averag=
e 60cm.</span></p>
<p><span>inductivity: 245mH.</span></p>
<p><span>&nbsp;</span></p>
<p><span>The generator is a homebrew BPU lf-exciter with the possibility=
 of all usual kinds of modulations. </span></p>
<p><span>&nbsp;</span></p>
<p><span>The class E PA makes 2,4kWrms on NF. I could get 1700Wrms out of=
 this (misused) disco PA on 9kHz. <br />
</span></p>
<p><span>When I did so the consequence was:&nbsp; One couldnt touch any ga=
rden hand tools or other things longer than 50cm. <br />
</span></p>
<p><span>Txing with 750W: My XYL doesnt shriek any more when working in th=
e garden and touching p.e. the barrow.</span></p>
<p><span>&nbsp;</span></p>
<p><span>Best regards</span></p>
<p><span>Uwe/dj8wx still txing a carrier on 8970,022Hz. In some days Ill=
 send in qrs6000.</span></p>
<p><span>&nbsp;</span></p>
<br />
<br />
<hr />
Von: rsgb_lf_group@blacksheep.org<br />
Gesendet: 02.03.2011 16:20<br />
An: rsgb_lf_group@blacksheep.org<br />
Betreff: LF: Who is transmitting on 8970.022 Hz??<br />
<hr />
<br />
VLF,<br />
<br />
Someone is transmitting on 8970.022 Hz, visible in my "DFCW-6000" window=
 <br />
and visible at OE3GHB! It is neither Markus nor Ossi nor Gerhard nor me,=
 <br />
so who is it??? :-)<br />
Frequency is very accurate over time!<br />
<br />
On 8969.97 i am doing a local test so pse don't wonder.<br />
<br />
73, Stefan/DK7FC<br /></span>

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