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From: Jean-Louis.RAULT@fr.thalesgroup.com
To: rsgb_lf_group@blacksheep.org
Date: Thu, 25 Feb 2010 15:35:30 +0100
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Subject: LF: RE: VLF test signals?
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Stephan
=20
The two lowest frequencies in use are presently:
=20
- 11.904 kHz (RSDN-20 network, a russian navigation VLF system with
transmitters located in Novosibirsk, Krasnodar, etc)
=20
- 82 Hz (ZEVS system, an ELF transmitter located on the Kola peninsula and
dedicated to strategic transmissions with russian nuclear submarines )
=20
I receive both stations here near Paris with an E-field receiver consistin=
g
of a home-brew receiver fitted with a FET/BJT front end and a 1m long
cylinder vertical antenna
=20
Regards
=20
Jean-Louis F6AGR


  _____ =20

From: owner-rsgb_lf_group@blacksheep.org
[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Stefan Sch=E4fer
Sent: Thursday, February 25, 2010 12:59 PM
To: rsgb_lf_group@blacksheep.org
Subject: VLF test signals?


Which commercial VLF transmitters can actually be received in the 10kHz
range? There is much listed in the web but in times where these transmitte=
rs
are shut down all this may be already old stuff. Who is receiving in this
frequency region and can tell us a frequency and the SNR he is achieving?
There are so many OMs who watch the VLF sector and have nothing done with=
 LF
and this group. Perhaps it it an idea to activate/motivate them for some
tests, to increase the RXers density.
Maybe it is good to compare some RX rprts in that region. But i will rathe=
r
be active at the transmitters front now ;-)
=20
Stefan/DK7FC

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-1">


<META content=3D"MSHTML 6.00.2900.3660" name=3DGENERATOR></HEAD>
<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>Stephan</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>The two lowest frequencies in use are=20
presently:</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>- 11.904 kHz (RSDN-20 network, a russian=
 navigation VLF=20
system with transmitters located in Novosibirsk, Krasnodar,=20
etc)</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>- 82 Hz (ZEVS system, an ELF&nbsp;transmi=
tter located on=20
the Kola peninsula and dedicated to strategic transmissions with russian=
 nuclear=20
submarines )</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>I receive both stations here near Paris=
 with an E-field=20
receiver consisting of a&nbsp;home-brew receiver fitted with a FET/BJT fro=
nt end=20
and a 1m long cylinder vertical antenna</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>Regards</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D812282414-25022010><FONT face=3D=
Arial   color=3D#0000ff size=3D2>Jean-Louis F6AGR</FONT></SPAN></DIV><BR>
<BLOCKQUOTE dir=3Dltr   style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORD=
ER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Dfr dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> owner-rsgb_lf_group@blacksheep=
.org=20
  [mailto:owner-rsgb_lf_group@blacksheep.org] <B>On Behalf Of </B>Stefan=
=20
  Sch=E4fer<BR><B>Sent:</B> Thursday, February 25, 2010 12:59 PM<BR><B>To:=
</B>=20
  rsgb_lf_group@blacksheep.org<BR><B>Subject:</B> VLF test=20
  signals?<BR></FONT><BR></DIV>
  <DIV></DIV>
  <DIV id=3DidOWAReplyText6886 dir=3Dltr>Which commercial&nbsp;VLF transmi=
tters can=20
  actually be received in the 10kHz range? There is much listed in the web=
 but=20
  in times where these transmitters are shut down all this may be already=
 old=20
  stuff. Who is receiving in this frequency region and can tell us a frequ=
ency=20
  and the SNR he is achieving? There are so many OMs who watch the VLF sec=
tor=20
  and have nothing done with LF and this group. Perhaps it it an idea to=
=20
  activate/motivate them for some tests, to increase the RXers density.</D=
IV>
  <DIV dir=3Dltr>Maybe it is good to compare some RX rprts in that region.=
 But i=20
  will rather be active at the transmitters front now ;-)</DIV>
  <DIV dir=3Dltr>&nbsp;</DIV>
  <DIV dir=3Dltr>Stefan/DK7FC</DIV></BLOCKQUOTE></BODY></HTML>

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