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From: "Dave G3WCB." <ganymede444@btopenworld.com>
To: <rsgb_lf_group@blacksheep.org>
Date: Thu, 12 Sep 2013 20:06:45 +0100
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Subject: LF: RE: 630m WSPR this evening
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Hi, Roger.

No sign of you so far this evening.

73, Dave G3WCB IO9RM
  -----Original Message-----
  From: owner-rsgb_lf_group@blacksheep.org
[mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Roger Lapthorn
  Sent: 12 September 2013 19:15
  To: rsgb_lf_group@blacksheep.org
  Subject: LF: 630m WSPR this evening


  'Recently I moved 350m east (!) to a new QTH and I've been experimenting
with 630m WSPR.

  My initial tests were with the transverter on my website feeding a pair of
earth-electrodes but with a shorter baseline than was possible at the old
QTH (about 12m separation). Although I managed to get reports from G, ON and
PA, it was clear that results were nowhere near as good as I obtained at the
old QTH. I am speculating that this is due to the effective spacing between
earth rods being much shorter and due to buried wires and pipes
criss-crossing the lawn. On RX it is working very well though and I have
copied most of the nearer Europeans on 630m WSPR.

  This afternoon I converted the earth-electrode antenna to an "in the air"
loop by disconnecting the earth rods and joining the wire ends with a wire
running along the top of the lawn (in the grass). The loop DC resistance is
0.9 ohms and it tunes sharply with about 1.7nF. Matching is via a 3C90
step-down toroid.

  Initial encouraging reports include first spots from M0PPP, who had failed
to copy me before from this QTH, as well as PA3ABK/2 and G8HUH.

  If anyone else can look for me this evening I'd appreciate it. The loop is
not very high and can be further improved if results this evening are
encouraging.

  73s
  Roger G3XBM

  --

  http://g3xbm-qrp.blogspot.com/
  http://www.g3xbm.co.uk
  https://sites.google.com/site/sub9khz/
  http://qss2.blogspot.com/
  http://www.youtube.com/user/g3xbm


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<BODY>
<DIV><SPAN class=3D156500519-12092013><FONT face=3DArial color=3D#0000ff =
size=3D2>Hi,=20
Roger.</FONT></SPAN></DIV>
<DIV><SPAN class=3D156500519-12092013><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D156500519-12092013><FONT face=3DArial color=3D#0000ff =
size=3D2>No=20
sign of you so far this evening.</FONT></SPAN></DIV>
<DIV><SPAN class=3D156500519-12092013><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D156500519-12092013><FONT face=3DArial color=3D#0000ff =
size=3D2>73,=20
Dave G3WCB IO9RM</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B>=20
  owner-rsgb_lf_group@blacksheep.org=20
  [mailto:owner-rsgb_lf_group@blacksheep.org]<B>On Behalf Of </B>Roger=20
  Lapthorn<BR><B>Sent:</B> 12 September 2013 19:15<BR><B>To:</B>=20
  rsgb_lf_group@blacksheep.org<BR><B>Subject:</B> LF: 630m WSPR this=20
  evening<BR><BR></FONT></DIV>
  <DIV dir=3Dltr>'Recently I moved 350m east (!) to a new QTH and I've =
been=20
  experimenting with 630m WSPR. <BR><BR>My initial tests were with the=20
  transverter on my website feeding a pair of earth-electrodes but with =
a=20
  shorter baseline than was possible at the old QTH (about 12m =
separation).=20
  Although I managed to get reports from G, ON and PA, it was clear that =
results=20
  were nowhere near as good as I obtained at the old QTH. I am =
speculating that=20
  this is due to the effective spacing between earth rods being much =
shorter and=20
  due to buried wires and pipes criss-crossing the lawn. On RX it is =
working=20
  very well though and I have copied most of the nearer Europeans on =
630m WSPR.=20
  <BR><BR>This afternoon I converted the earth-electrode antenna to an =
"in the=20
  air" loop by disconnecting the earth rods and joining the wire ends =
with a=20
  wire running along the top of the lawn (in the grass). The loop DC =
resistance=20
  is 0.9 ohms and it tunes sharply with about 1.7nF. Matching is via a =
3C90=20
  step-down toroid.<BR><BR>Initial encouraging reports include first =
spots from=20
  M0PPP, who had failed to copy me before from this QTH, as well as =
PA3ABK/2 and=20
  G8HUH.<BR><BR>If anyone else can look for me this evening I'd =
appreciate it.=20
  The loop is not very high and can be further improved if results this =
evening=20
  are encouraging.<BR><BR>73s<BR>Roger G3XBM<BR clear=3Dall><BR>-- <BR>
  <DIV dir=3Dltr><A href=3D"http://g3xbm-qrp.blogspot.com/"=20
  target=3D_blank>http://g3xbm-qrp.blogspot.com/</A><BR><A=20
  href=3D"http://www.g3xbm.co.uk" =
target=3D_blank>http://www.g3xbm.co.uk</A><BR><A=20
  href=3D"https://sites.google.com/site/sub9khz/"=20
  target=3D_blank>https://sites.google.com/site/sub9khz/</A><BR><A=20
  href=3D"http://qss2.blogspot.com/"=20
  target=3D_blank>http://qss2.blogspot.com/</A><BR><A=20
  href=3D"http://www.youtube.com/user/G3XBM"=20
  =
target=3D_blank>http://www.youtube.com/user/g3xbm</A><BR><BR></DIV></DIV>=
</BLOCKQUOTE></BODY></HTML>

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