Message-ID: <4CF7E60F.1010800@iup.uni-heidelberg.de>
Date: Thu, 02 Dec 2010 19:31:43 +0100
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <schaefer@iup.uni-heidelberg.de>
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Subject: Re: VLF: DK7FC's 9th VLF kite experiment
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Hi Chris,

Am 02.12.2010 17:40, schrieb Chris Gomoiu:
> Hello Stefan, VLF,
>
> Good luck there! I'll be looking for any trace of signal from you.
Fine! Your grabber is my hardest but realistic goal in this experiment. :-=
)
When looking to your grabber (http://qsl.net/4x1rf/vlf/vlfgrabber.htm) i=
=20
see when DHO38 or JXN has a good SNR arround 10...11 UTC and arround my=20
sunset. So i will try to transmit on 8970 Hz to that time. Maybe i find=20
someone for QSP to the reflector again (Markus or Marco?)...

> Any LF activity planned?

Yes. I will take the LF coil and the PA there as well. At least i will=20
find where i have to make a tap on the coil to resonate the 200m and=20
maybe even the 300m antenna. If this can easily be done i will transmit=20
in CW and DFCW-4 and DFCW-90 or so. The 300m antenna has about 50%=20
efficiency, so i need 1W TX power for about 1W ERP! ;-) My PA driver at=20
12 Vpp would probably enough to reach UK in DFCW-60 or so ;-) Will be an=
=20
exciting test! But there is a lot that can happen on that way. The snow=20
is just one of my worries but it works with some optimism ;-)

73, Stefan


>
>
> 73s
> Chris 4X1RF
>
>
> 2010/12/2 Stefan Sch=E4fer <Stefan.Schaefer@iup.uni-heidelberg.de=20
> <mailto:Stefan.Schaefer@iup.uni-heidelberg.de>>
>
>     Dear VLF/LF group,
>
>     The wind forecast is still promising and so i announced my next
>     VLF/LF kite experiment at the german air traffic control and will
>     get the permission for a 300m vertical antenna during daytime. The
>     WX is promising on saturday _and_ on sunday. Thus i will decide
>     the day tomorrow since the forecast becomes most probably as
>     estimated 24 hours before. My favorite day is saturday.
>     So, i will inform you tomorrow more detailed about the planned
>     program.
>
>     Will someone try an attempt to receive that signal? :-)
>
>     73, Stefan/DK7FC
>
>

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Hi Chris,<br>
<br>
Am 02.12.2010 17:40, schrieb Chris Gomoiu:
<blockquote   cite="mid:AANLkTikj2hKd3jNxs_QmqW9-0x4TAS-DDF45gtAxFMOG@mail.gmail.com"   type="cite">
  <div dir="ltr">Hello Stefan, VLF,<br>
  <br>
Good luck there! I'll be looking for any trace of signal from you.</div>
</blockquote>
Fine! Your grabber is my hardest but realistic goal in this experiment.
:-)<br>
When looking to your grabber (<a class="moz-txt-link-freetext" href="http://qsl.net/4x1rf/vlf/vlfgrabber.htm">http://qsl.net/4x1rf/vlf/vlfgrabber.htm</a>)
i see when DHO38 or JXN has a good SNR arround 10...11 UTC and arround
my sunset. So i will try to transmit on 8970 Hz to that time. Maybe i
find someone for QSP to the reflector again (Markus or Marco?)...<br>
<br>
<blockquote   cite="mid:AANLkTikj2hKd3jNxs_QmqW9-0x4TAS-DDF45gtAxFMOG@mail.gmail.com"   type="cite">
  <div dir="ltr"> Any LF activity planned?<br>
  </div>
</blockquote>
<br>
Yes. I will take the LF coil and the PA there as well. At least i will
find where i have to make a tap on the coil to resonate the 200m and
maybe even the 300m antenna. If this can easily be done i will transmit
in CW and DFCW-4 and DFCW-90 or so. The 300m antenna has about 50%
efficiency, so i need 1W TX power for about 1W ERP! ;-) My PA driver at
12 Vpp would probably enough to reach UK in DFCW-60 or so ;-) Will be
an exciting test! But there is a lot that can happen on that way. The
snow is just one of my worries but it works with some optimism ;-)<br>
<br>
73, Stefan<br>
<br>
<br>
<blockquote   cite="mid:AANLkTikj2hKd3jNxs_QmqW9-0x4TAS-DDF45gtAxFMOG@mail.gmail.com"   type="cite">
  <div dir="ltr"><br>
  <br>
73s<br>
Chris 4X1RF<br>
  <br>
  <br>
  <div class="gmail_quote">2010/12/2 Stefan Sch&auml;fer <span dir="ltr">&lt;<a   moz-do-not-send="true"   href="mailto:Stefan.Schaefer@iup.uni-heidelberg.de">Stefan.Schaefer@iup.uni-heidelberg.de</a>&gt;</span><br>
  <blockquote class="gmail_quote"   style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
    <div bgcolor="#ffffff" text="#000000">
Dear VLF/LF group,<br>
    <br>
The wind forecast is still promising and so i announced my next VLF/LF
kite experiment at the german air traffic control and will get the
permission for a 300m vertical antenna during daytime. The WX is
promising on saturday <u>and</u> on sunday. Thus i will decide the day
tomorrow since the forecast becomes most probably as estimated 24 hours
before. My favorite day is saturday.<br>
So, i will inform you tomorrow more detailed about the planned program.<br>
    <br>
Will someone try an attempt to receive that signal? :-)<br>
    <br>
73, Stefan/DK7FC<br>
    </div>
  </blockquote>
  </div>
  <br>
  </div>
</blockquote>
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