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Message-ID: <031E83CD8D72440486D28C1EBA4E53C3@Black>
From: "Markus Vester" <markusvester@aol.com>
To: <rsgb_lf_group@blacksheep.org>
References: <BC520BF69FBC4F4B9B8E1C9B8AAB8A9B@White> <88EEC52E6C874CCEB966804D073A3376@White> <57a24ca70912110724l43b18b68t5d2f18849fb14147@mail.gmail.com>
In-Reply-To: <57a24ca70912110724l43b18b68t5d2f18849fb14147@mail.gmail.com>
Date: Sat, 12 Dec 2009 00:56:55 +0100
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Subject: Re: LF: Intercontinental LF waterholes
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Dear Warren, LF,
well your point about the winter night is perfectly understood...=20
A fixed QRG will not be a problem for transatlantic contacts, as long=
as we Eu's would transmit in the lower band. Only if during the secon=
d half of your night you'd aim West, and someone from over there might=
want to fire up near your QRG, the two of you could end up blocking=
possible coast-to-coast contacts.=20
There is also a technical answer: you could perhaps tune remotely usin=
g a relay, or even connect the additional capacitance at the input of=
the feedline. It may add in a bit of extra loss but not much, as only=
2% of the reactance would need to be switched.
Best wishes,
Markus (DF6NM)
----- Original Message -----=20
From: "Warren Ziegler" <wd2xgj@gmail.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Friday, December 11, 2009 4:24 PM
Subject: Re: LF: Intercontinental LF waterholes
Markus,
My antenna tuning unit is outside 100 meters away from=
the ham shack.
I am unwilling to go out in the winter night to retune the antenna to=
QSY to the lower frequency segment.
--=20
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On Fri, Dec 11, 2009 at 3:38 AM, Markus Vester <markusvester@aol.com>=
wrote:
Dear LF,
the passage should have said:
Taking into account the path of mutual darkness, this would mean that=
all stations should transmit in the UPPER band during their evenings=
until local midnight, and then QSY to the lower band for the rest of=
the night.
Sorry for the confusion.
73, Markus
...
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Diso-88=
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<DIV><FONT face=3DArial size=3D2>Dear Warren, LF,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>well your point about the winter=
night is=20
perfectly understood... </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>A fixed QRG will not be a=
=20
problem for transatlantic contacts, as long as we Eu's would tran=
smit in=20
the lower band. Only if during the second half of your night you'=
d aim=20
West, and someone from over there might want to fire up near=
your=20
QRG, the two of you could end up=20
blocking possible coast-to-coast contacts. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>There is also a technical answer=
: you could=20
perhaps tune remotely using a relay, or even connect the addition=
al=20
capacitance at the input of the feedline. It may add in a bit of=
extra loss=20
but not much, as only 2% of the reactance would need to be=20
switched.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Best wishes,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Markus (DF6NM)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>----- Original Message ----- </FONT>
<DIV><FONT face=3DArial size=3D2>From: "Warren Ziegler" <</FONT><A=
href=3D"mailto:wd2xgj@gmail.com"><FONT face=3DArial size=3D2>wd2x=
gj@gmail.com</FONT></A><FONT face=3DArial size=3D2>></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>To: <</FONT><A href=3D"mailto:rs=
gb_lf_group@blacksheep.org"><FONT face=3DArial size=3D2>rsgb_lf_grou=
p@blacksheep.org</FONT></A><FONT face=3DArial size=3D2>></FONT></=
DIV>
<DIV><FONT face=3DArial size=3D2>Sent: Friday, December 11, 2009 4:24=
=20
PM</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Subject: Re: LF: Intercontinental LF=
=20
waterholes</FONT></DIV></DIV>
<DIV><FONT face=3DArial><BR><FONT size=3D2></FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Markus,<BR><BR> &n=
bsp; =20
My antenna tuning unit is outside 100 meters away from the ham shack.<=
BR> I=20
am unwilling to go out in the winter night to retune the antenna to QS=
Y to the=20
lower frequency segment.<BR><BR>-- <BR>73 Warren=20
K2ORS<BR> &=
nbsp; =20
WD2XGJ<BR> =
=20
WD2XSH/23<BR> &nb=
sp; =20
WE2XEB/2<BR> &nbs=
p; =20
WE2XGR/1<BR><BR>On Fri, Dec 11, 2009 at 3:38 AM, Markus Vester <</F=
ONT><A href=3D"mailto:markusvester@aol.com"><FONT face=3DArial siz=
e=3D2>markusvester@aol.com</FONT></A><FONT face=3DArial size=3D2>>=
=20
wrote:<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Dear LF,<BR><BR>the passage should ha=
ve=20
said:<BR><BR>Taking into account the path of mutual darkness, this wou=
ld mean=20
that all stations should transmit in the UPPER band during their eveni=
ngs until=20
local midnight, and then QSY to the lower band for the rest of the=20
night.<BR><BR>Sorry for the confusion.<BR><BR>73,=20
Markus<BR>...</DIV></FONT></BODY></HTML>
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