Message-ID: <4D6FB897.8090308@iup.uni-heidelberg.de>
Date: Thu, 03 Mar 2011 16:49:43 +0100
From: =?windows-1252?Q?Stefan_Sch=E4fer?=
 <schaefer@iup.uni-heidelberg.de>
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To: rsgb_lf_group@blacksheep.org
References: <3b90ebeb91e44829a9f470214c4894a6@kabelmail.de>
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Subject: Re: LF: Who is transmitting on 8970.022 Hz??
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Excellent! You are the 4th station in Germany who is/was seen in the far 
field and the 3rd station that is visible above 100 km. Congratulations!
That's a very good result for a fixed antenna! If you can reduce the 
power so that 200 mA is displayed, we could calculate the current at 
full power. And the voltage and the losses :-)

The distance to me is 500 km and the distance to OE3GHB is 779 km! I'm 
sure that OK2BVG, SQ5BPF and stations in UK and F will see you too :-)

Looking forward to your 6000 transmission...

73, Stefan/DK7FC

PS: I informed Paul Nicholson. Maybe he will watch out for you :-)

Am 03.03.2011 16:19, schrieb uwe-jannsen@kabelmail.de:
>
> Hi all,
>
> its no longer a secret :
>
> Stefan and Markus found a carrier at 8970,022Hz on Stefans and 
> Gerhards 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.
>
> My aerial: pse see
>
> http://dj8wx-dl.de/hompage500kHz/TX%20equipment.htm
>
> second last pic on the site. The 23m long wire has been lengthened by 
> an other 20m.
>
> The radiasls have a overall length of  500m.
>
> I tried a measuring of the current between  the footpoint of the 
> matching coils and the radials:
>
> Sri, but the meter doesnt show more than 200mA and its far > than that.
>
> The TX bumps 7,5A at 284Vpp (753Wrms) into the field coil of 134uH (Z 
> 7,5 Ohm).
>
> The diameter of the circuit single layer winding coils: on average 60cm.
>
> inductivity: 245mH.
>
> The generator is a homebrew BPU lf-exciter with the possibility of all 
> usual kinds of modulations.
>
> The class E PA makes 2,4kWrms on NF. I could get 1700Wrms out of this 
> (misused) disco PA on 9kHz.
>
> When I did so the consequence was:  One couldnt touch any garden hand 
> tools or other things longer than 50cm.
>
> Txing with 750W: My XYL doesnt shriek any more when working in the 
> garden and touching p.e. the barrow.
>
> Best regards
>
> Uwe/dj8wx still txing a carrier on 8970,022Hz. In some days Ill send 
> in qrs6000.
>
>
>
> ------------------------------------------------------------------------
> 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
> and visible at OE3GHB! It is neither Markus nor Ossi nor Gerhard nor me,
> 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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Excellent! You are the 4th station in Germany who is/was seen in the
far field and the 3rd station that is visible above 100 km.
Congratulations!<br>
That's a very good result for a fixed antenna! If you can reduce the
power so that 200 mA is displayed, we could calculate the current at
full power. And the voltage and the losses :-)<br>
<br>
The distance to me is 500 km and the distance to OE3GHB is 779 km! I'm
sure that OK2BVG, SQ5BPF and stations in UK and F will see you too :-)<br>
<br>
Looking forward to your 6000 transmission...<br>
<br>
73, Stefan/DK7FC<br>
<br>
PS: I informed Paul Nicholson. Maybe he will watch out for you :-)<br>
<br>
Am 03.03.2011 16:19, schrieb <a class=3D"moz-txt-link-abbreviated" href=3D=
"mailto:uwe-jannsen@kabelmail.de:">uwe-jannsen@kabelmail.de:</a>
<blockquote cite=3D"mid:3b90ebeb91e44829a9f470214c4894a6@kabelmail.de"  ty=
pe=3D"cite"><span style=3D"font-family: Arial; font-size: 13px;"><br>
  <p>Hi all,</p>
  <p>=A0</p>
  <p><span>its no longer a secret :</span></p>
  <p><span>Stefan and Markus found a carrier at 8970,022Hz on Stefans
and Gerhards 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>=A0</span></p>
  <p><span>My aerial: pse see</span></p>
  <p><span>=A0</span></p>
  <p><a moz-do-not-send=3D"true"  href=3D"http://dj8wx-dl.de/hompage500kHz=
/TX%20equipment.htm"><span>http://dj8wx-dl.de/hompage500kHz/TX%20equipment=
.htm</span></a></p>
  <p>=A0</p>
  <p><span>second last pic on the site. The 23m long wire has been
lengthened by an other 20m.</span></p>
  <p><span>The radiasls have a overall length of=A0 500m.</span></p>
  <p><span>=A0</span></p>
  <p><span>I tried a measuring of the current between=A0 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>=A0</span></p>
  <p><span>The TX bumps 7,5A at 284Vpp (753Wrms) into the field coil of
134uH (Z 7,5 Ohm).</span></p>
  <p><span>=A0</span></p>
  <p><span>The diameter of the circuit single layer winding coils: on
average 60cm.</span></p>
  <p><span>inductivity: 245mH.</span></p>
  <p><span>=A0</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>=A0</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:=A0 One couldnt touch any
garden 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 the garden and touching p.e. the barrow.</span></p>
  <p><span>=A0</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>=A0</span></p>
  <br>
  <br>
  <hr>
Von: <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:rsgb_lf_group@bl=
acksheep.org">rsgb_lf_group@blacksheep.org</a><br>
Gesendet: 02.03.2011 16:20<br>
An: <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:rsgb_lf_group@bla=
cksheep.org">rsgb_lf_group@blacksheep.org</a><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></blockquote>
</body>
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