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From: Markus Vester <markusvester@aol.com>
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Date: Tue, 9 Oct 2012 10:30:08 -0400 (EDT)
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 Content preview:  Hi Geri,Â not sure if that was really their big TX,Â looked
    more like a network analyzer to me. Unfortunately I haven't actually read
    off the fieldstrength last night, but from the brightness and the noiseblanking
    artifacts in the screenshots I'm sure they were radiating no more than a
   couple of watts. For impedance measurements on a big antenna, suchÂ power
   is probably needed to overcome receivedÂ power from distant LF transmitters,
    which can easily be a watt or more. Â Best 73, Markus (DF6NM) [...] 
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Subject: Re: LF: LF-Sweep 136.5 to 141.5
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Hi Geri,=C2=A0
not sure if that was really their big TX,=C2=A0looked more like a network a=
nalyzer to me. Unfortunately I haven't actually read off the fieldstrength =
last night, but from the brightness and the noiseblanking artifacts in the =
screenshots I'm sure they were radiating no more than a couple of watts. Fo=
r impedance measurements on a big antenna, such=C2=A0power is probably need=
ed to overcome received=C2=A0power from distant LF transmitters, which can =
easily be a watt or more.
=C2=A0
Best 73,
Markus (DF6NM)

=C2=A0
-----Urspr=C3=BCngliche Mitteilung-----=20
Von: Holger 'Geri' DK8KW DI2BO W1KW geri@dk8kw.de
An: rsgb_lf_group &lt;rsgb_lf_group@blacksheep.org&gt;
Verschickt: Di, 9 Okt 2012 2:11 pm
Betreff: Re: LF: LF-Sweep 136.5 to 141.5

Andrey,=20
=20
So obviously they used their main transmitter, perhaps with some reduced po=
wer, =20
to do the antenna alignment. =20
=20
I haven't actually seen the transmitter in  Burg but I had the opportunity =
to =20
see the main DCF77 transmitter, and what I saw pretty much reminded me of m=
y own =20
LF/MF station. No special technical solutions, just a big PA, an antenna cu=
rrent =20
meter and a big variometer - that's all ...=20
=20
Vy 73=20
=20
Geri, now: OK/DK8KW=20
 ...


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Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="utf-8"


<div style=3D"FONT-FAMILY: arial; COLOR: black; FONT-SIZE: 10pt"><FONT colo=
r=3Dblack face=3Darial></FONT>Hi Geri,

<div>&nbsp;</div>


<div>not sure if that was really their big TX,&nbsp;looked more like a netw=
ork analyzer to me. Unfortunately I haven't actually read off the fieldstre=
ngth last night, but from the brightness and the noiseblanking artifacts in=
 the screenshots I'm sure they were radiating no more than a couple of watt=
s. For impedance measurements on a big antenna, such&nbsp;power is probably=
 needed to overcome received&nbsp;power from distant LF transmitters, which=
 can easily be a watt or more.</div>


<div>&nbsp;</div>


<div>Best 73,</div>


<div>Markus (DF6NM)</div>
</div>


<div>&nbsp;</div>


<div>-----Urspr=C3=BCngliche Mitteilung----- <br>
Von: Holger 'Geri' DK8KW DI2BO W1KW <A href=3D"mailto:geri@dk8kw.de">geri@d=
k8kw.de</A><br>
An: rsgb_lf_group &lt;rsgb_lf_group@blacksheep.org&gt;<br>
Verschickt: Di, 9 Okt 2012 2:11 pm<br>
Betreff: Re: LF: LF-Sweep 136.5 to 141.5<br>
</div>


<div style=3D"BACKGROUND-COLOR: #fff; MARGIN: 0px; FONT-FAMILY: Tahoma, Ver=
dana, Arial, Sans-Serif; COLOR: #000; FONT-SIZE: 12px" id=3DAOLMsgPart_0_91=
5442c5-263f-4ef0-ab9b-d65140fbfbed><PRE style=3D"FONT-SIZE: 9pt"><TT>Andrey=
, <br>
 <br>
So obviously they used their main transmitter, perhaps with some reduced po=
wer,  <br>
to do the antenna alignment.  <br>
 <br>
I haven't actually seen the transmitter in  Burg but I had the opportunity =
to  <br>
see the main DCF77 transmitter, and what I saw pretty much reminded me of m=
y own  <br>
LF/MF station. No special technical solutions, just a big PA, an antenna cu=
rrent  <br>
meter and a big variometer - that's all ... <br>
 <br>
Vy 73 <br>
 <br>
Geri, now: OK/DK8KW <br>
 ...</TT></PRE></div>

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