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References: <003d01ce71b1$fc0c55e0$f42501a0$@comcast.net> <51C9B3DE.6070603@psk31.plus.com> <51C9D009.6030802@iup.uni-heidelberg.de> <51C9F5E2.5020507@iup.uni-heidelberg.de> <51CA027E.4040308@psk31.plus.com> <51CA0850.5060103@iup.uni-heidelberg.de>
Date: Wed, 26 Jun 2013 18:19:13 -0000
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Content preview: .. you should replace the stainless steel wire with an aluminium
wire... lighter and with lower losses... in this way you could improve the
signal and I'm sure that Markus will listen to you also via long path! [...]
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Subject: Re: LF: MF propagation
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.. you should replace the stainless steel wire with an aluminium wire...
lighter and with lower losses... in this way you could improve the =
signal and I'm sure that Markus will listen to you also via long path!
.... .. .... ..
73 Marco IK1HSS
----- Original Message -----=20
From: Stefan Sch=E4fer=20
To: rsgb_lf_group@blacksheep.org=20
Sent: Tuesday, June 25, 2013 9:14 PM
Subject: Re: LF: MF propagation
Hi Eddie,=20
Yes and it is not new and it has all been done in the past :-)
The feeder is 10mm diameter stainless steel. I guess it takes at least =
300A before it melts :-) So the limit would be the withstand voltage of =
the ceramic isolator, even on MF :-)
73, Stefan
Am 25.06.2013 22:50, schrieb g3zjo:=20
Hi Stefan
Did you look to see if your feeder had taken one hour to melt? :-)=20
You know that WSPR's auto reporting is of no use at all and the =
quick QSO Mode 599 imi 599 is the preferred method.
73 Eddie
On 25/06/2013 20:56, Stefan Sch=E4fer wrote:=20
MF,=20
I just saw this:=20
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az=20
2013-06-25 19:48 DK7FC 0.475690 0 -1 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 19:42 DK7FC 0.475689 -2 0 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 19:36 DK7FC 0.475690 -2 0 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 19:24 DK7FC 0.475690 -8 -1 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 19:18 DK7FC 0.475690 -8 0 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 19:12 DK7FC 0.475690 -9 0 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 19:00 DK7FC 0.475690 -17 0 JN49ik 1 =
IW4DXW JN64bw 563 151 =20
2013-06-25 18:54 DK7FC 0.475689 -23 0 JN49ik 1 =
IW4DXW JN64bw 563 151=20
I find it interesting to see that the propagation on 630m between =
JN49 and JN64, just 563 km, changed so rapidly and consistant from a =
non-decode to an SNR of 0 dB, i.e. by about 30 dB in one hour!
At EA2HB we can see now daily when the band opens from DL to EA =
and when it closes. A really useful software!
73, Stefan/DK7FC
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<BODY text=3D#000000 bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>.. you should replace the stainless =
steel wire with=20
an aluminium wire...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>lighter and with lower losses... in =
this way you=20
could improve the signal and I'm sure that Markus will listen to you =
also via=20
long path!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>.... .. .... ..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>73 Marco IK1HSS</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3DStefan.Schaefer@iup.uni-heidelberg.de=20
href=3D"mailto:Stefan.Schaefer@iup.uni-heidelberg.de">Stefan =
Sch=E4fer</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Drsgb_lf_group@blacksheep.org=20
=
href=3D"mailto:rsgb_lf_group@blacksheep.org">rsgb_lf_group@blacksheep.org=
</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, June 25, 2013 =
9:14=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: LF: MF =
propagation</DIV>
<DIV><BR></DIV>Hi Eddie, <BR><BR>Yes and it is not new and it has all =
been=20
done in the past :-)<BR><BR>The feeder is 10mm diameter stainless =
steel. I=20
guess it takes at least 300A before it melts :-) So the limit would be =
the=20
withstand voltage of the ceramic isolator, even on MF :-)<BR><BR>73,=20
Stefan<BR><BR>Am 25.06.2013 22:50, schrieb g3zjo:=20
<BLOCKQUOTE cite=3Dmid:51CA027E.4040308@psk31.plus.com =
type=3D"cite">Hi=20
Stefan<BR><BR>Did you look to see if your feeder had taken one hour =
to melt?=20
<SPAN class=3Dmoz-smiley-s1><SPAN>:-) </SPAN></SPAN><BR>You know =
that WSPR's=20
auto reporting is of no use at all and the quick QSO Mode 599 imi =
599 is the=20
preferred method.<BR><BR>73 Eddie<BR><BR>On 25/06/2013 20:56, Stefan =
Sch=E4fer=20
wrote:=20
<BLOCKQUOTE cite=3Dmid:51C9F5E2.5020507@iup.uni-heidelberg.de=20
type=3D"cite">MF, <BR><BR>I just saw this: <BR>
<TABLE>
<TBODY>
<TR>
<TH>Timestamp</TH>
<TH>Call</TH>
<TH>MHz</TH>
<TH>SNR</TH>
<TH>Drift</TH>
<TH>Grid</TH>
<TH>Pwr</TH>
<TH>Reporter</TH>
<TH>RGrid</TH>
<TH>km</TH>
<TH>az</TH></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:48 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475690 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dright> -1 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:42 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475689 </TD>
<TD align=3Dright> -2 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:36 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475690 </TD>
<TD align=3Dright> -2 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:24 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475690 </TD>
<TD align=3Dright> -8 </TD>
<TD align=3Dright> -1 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:18 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475690 </TD>
<TD align=3Dright> -8 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:12 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475690 </TD>
<TD align=3Dright> -9 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 19:00 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475690 </TD>
<TD align=3Dright> -17 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151 </TD></TR>
<TR>
<TD align=3Dright> 2013-06-25 18:54 </TD>
<TD align=3Dleft> DK7FC </TD>
<TD align=3Dright> 0.475689 </TD>
<TD align=3Dright> -23 </TD>
<TD align=3Dright> 0 </TD>
<TD align=3Dleft> JN49ik </TD>
<TD align=3Dright> 1 </TD>
<TD align=3Dleft> IW4DXW </TD>
<TD align=3Dleft> JN64bw </TD>
<TD align=3Dright> 563 </TD>
<TD align=3Dright> 151</TD></TR></TBODY></TABLE><BR>I =
find it=20
interesting to see that the propagation on 630m between JN49 and =
JN64,=20
just 563 km, changed so rapidly and consistant from a non-decode =
to an SNR=20
of 0 dB, i.e. by about 30 dB in one hour!<BR><BR>At EA2HB we can =
see now=20
daily when the band opens from DL to EA and when it closes. A =
really=20
useful software!<BR><BR>73,=20
Stefan/DK7FC<BR></BLOCKQUOTE><BR></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>=
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