Message-ID: <4FB899125601413A9077646E2728C784@PcMinto>
From: Minto Witteveen <minto.witteveen@gmail.com>
To: <rsgb_lf_group@blacksheep.org>
References: <4E4527EF.2000304@iup.uni-heidelberg.de> <52970A62D1224CAF9A966D1743DCBF00@PcMinto> <4E456AB7.6090403@iup.uni-heidelberg.de>
In-Reply-To: <4E456AB7.6090403@iup.uni-heidelberg.de>
Date: Fri, 12 Aug 2011 23:07:32 +0200
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Subject: LF: Re: PA3BCA
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Hi Stefan.

I see your CQ on my grabber at this moment.=20
How does your ERP now compare with yesterday (during your QSO with Mal)?
It looks like S/N is now worse here then yesterday. Reason might be the =
loop versus the miniwhip (with the miniwhip the winner). But on the =
other hand there seems to be a lot of QRN (because of lightning at this =
moment.

73=E2=80=99s Minto pa3bca


-------------------------------------------------------------------------=
-
Ceterum censeo Carthaginem delendam esse


From: Stefan Sch=C3=A4fer=20
Sent: Friday, August 12, 2011 20:02
To: rsgb_lf_group@blacksheep.org=20
Subject: Re: LF: PA3BCA

Hi Minto,

Am 12.08.2011 19:42, schrieb Minto Witteveen:=20
  How much power were you generating?

  73=E2=80=99s, Minto pa3bca



It changes all the time. Not even sure since i just have an E field =
probe to decouple some power from my TX antenna and feed it to a 50 uA =
amperemeter, shunted by a potentiometer. This poti was adjusted to show =
100% full scale when using 120 W RF before some weeks. Now reduced the =
parallel R on the poti so it shows just 25 uA then. Got 50 uA anyway by =
QRO and more (not sure). So it should be arround 500W. This is -6 dBfs =
:-)

But the antenna, i.e. the coil and its cover is very lossy it seems. =
When there was rain, i have up to twice the losses :-( Need to search =
for an alternative cover (mustn't burn, so a water barrel is no =
alternative...).


73, Stefan/DK7FC

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http-equiv=3DContent-Type></HEAD>
<BODY dir=3Dltr bgColor=3D#ffffff text=3D#000000>
<DIV dir=3Dltr>
<DIV style=3D"FONT-FAMILY: 'Arial'; COLOR: #000000; FONT-SIZE: 10pt">
<DIV>Hi Stefan.</DIV>
<DIV>&nbsp;</DIV>
<DIV>I see your CQ on my grabber at this moment. <BR>How does your ERP =
now=20
compare with yesterday (during your QSO with Mal)?</DIV>
<DIV>It looks like S/N is now worse here then yesterday. Reason might be =
the=20
loop versus the miniwhip (with the miniwhip the winner). But on the =
other hand=20
there seems to be a lot of QRN (because of lightning at this =
moment.</DIV>
<DIV>&nbsp;</DIV>
<DIV>73=E2=80=99s Minto pa3bca</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV=20
style=3D"FONT-FAMILY: 'Arial'; COLOR: #000000; FONT-SIZE: =
10pt">-------------------------------------------------------------------=
-------<BR>Ceterum=20
censeo Carthaginem delendam esse<BR></DIV>
<DIV=20
style=3D"FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; =
COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: =
none">
<DIV style=3D"FONT: 10pt tahoma">
<DIV>&nbsp;</DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A=20
title=3DStefan.Schaefer@iup.uni-heidelberg.de=20
href=3D"mailto:Stefan.Schaefer@iup.uni-heidelberg.de">Stefan =
Sch=C3=A4fer</A> </DIV>
<DIV><B>Sent:</B> Friday, August 12, 2011 20:02</DIV>
<DIV><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><B>Subject:</B> Re: LF: PA3BCA</DIV></DIV></DIV>
<DIV>&nbsp;</DIV></DIV>
<DIV=20
style=3D"FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; =
COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: =
none">Hi=20
Minto,<BR><BR>Am 12.08.2011 19:42, schrieb Minto Witteveen:=20
<BLOCKQUOTE cite=3Dmid:52970A62D1224CAF9A966D1743DCBF00@PcMinto =
type=3D"cite">
  <DIV dir=3Dltr>
  <DIV style=3D"FONT-FAMILY: 'Arial'; COLOR: rgb(0,0,0); FONT-SIZE: =
10pt">
  <DIV>
  <P style=3D"MARGIN: 0in 0in 10pt" class=3DMsoNormal><SPAN>How much =
power were you=20
  generating?<o:p></o:p></SPAN></P><SPAN=20
  style=3D"LINE-HEIGHT: 115%; FONT-FAMILY: 'Calibri','sans-serif'; =
FONT-SIZE: 11pt">73=E2=80=99s,=20
  Minto pa3bca</SPAN></DIV><SPAN><o:p></o:p></SPAN>
  <DIV>&nbsp;</DIV>
  <DIV>&nbsp;</DIV></DIV></DIV></BLOCKQUOTE><BR>It changes all the time. =
Not even=20
sure since i just have an E field probe to decouple some power from my =
TX=20
antenna and feed it to a 50 uA amperemeter, shunted by a potentiometer. =
This=20
poti was adjusted to show 100% full scale when using 120 W RF before =
some weeks.=20
Now reduced the parallel R on the poti so it shows just 25 uA then. Got =
50 uA=20
anyway by QRO and more (not sure). So it should be arround 500W. This is =
-6 dBfs=20
:-)<BR><BR>But the antenna, i.e. the coil and its cover is very lossy it =
seems.=20
When there was rain, i have up to twice the losses :-( Need to search =
for an=20
alternative cover (mustn't burn, so a water barrel is no=20
alternative...).<BR><BR><BR>73, =
Stefan/DK7FC<BR></DIV></DIV></DIV></BODY></HTML>

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