Message-ID: <4EB537DB.5080707@iup.uni-heidelberg.de>
Date: Sat, 05 Nov 2011 14:19:23 +0100
From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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To: rsgb_lf_group@blacksheep.org
References: <4EB5344B.5000008@iup.uni-heidelberg.de>
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Subject: Re: LF: CW/136.5
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PS: The TX QTH is here: http://no.nonsense.ee/qthmap/?qth=3DJN49IK64GM

That is even 3.8 km to the TX and well outside any electricity as you=20
can see. So i expect much more chances to receive weaker signals in CW!

73


Am 05.11.2011 14:04, schrieb Stefan Sch=E4fer:
> LF,
>
> I'm going to do some /p *CW tests in an hour. QRG is then 136.5 kHz.*
>
> The TX is my usual LF antenna in the city, keyed via a UHF link out of=20
> about 2 km distance. That should be a quiet location.
>
> The first time all the stuff finds its place in a backpack. See:=20
> http://dl.dropbox.com/u/19882028/LF/UHF%20Link.JPG
>
> Not sure if the antenna has enough gain for the distance but i expect=20
> it will be ok.
>
> Note that i am using the *active ferrite antenna for RX*. Thus it may=20
> happen that i am nulling out a calling station, so it is worth to call=20
> several times, if you like.
>
> The PTT of the TX is quasi connected to the squelch LED of the UHF RX.=20
> That works very fine up to >125 Bpm. But maybe it opens sometimes due=20
> to a local noise. To the PTT circuit i have added a time limiting=20
> watchdog circuit that limits such an unwanted opening to about 10 secon=
ds.
>
> So, looking forward to some *QSOs* or at least a succesful testing.=20
> BTW there is no possibility to answer in QRSS. It is still CW exclusive=
ly!
>
> 73, Stefan/DK7FC
>
>

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content=3D"text/html; charset=3DISO-8859-15"
 http-equiv=3D"Content-Type">
</head>
<body bgcolor=3D"#ffffff" text=3D"#000000">
PS: The TX QTH is here: <a class=3D"moz-txt-link-freetext" href=3D"http:/=
/no.nonsense.ee/qthmap/?qth=3DJN49IK64GM">http://no.nonsense.ee/qthmap/?q=
th=3DJN49IK64GM</a><br>
<br>
That is even 3.8 km to the TX and well outside any electricity as you
can see. So i expect much more chances to receive weaker signals in CW!<b=
r>
<br>
73<br>
<br>
<br>
Am 05.11.2011 14:04, schrieb Stefan Sch=E4fer:
<blockquote cite=3D"mid:4EB5344B.5000008@iup.uni-heidelberg.de"
 type=3D"cite">
  <meta http-equiv=3D"content-type"
 content=3D"text/html; charset=3DISO-8859-15">
LF, <br>
  <br>
I'm going to do some /p <b>CW tests in an hour. QRG is then 136.5 kHz.</b=
><br>
  <br>
The TX is my usual LF antenna in the city, keyed via a UHF link out of
about 2 km distance. That should be a quiet location.<br>
  <br>
The first time all the stuff finds its place in a backpack. See:
  <a moz-do-not-send=3D"true" class=3D"moz-txt-link-freetext"
 href=3D"http://dl.dropbox.com/u/19882028/LF/UHF%20Link.JPG">http://dl.dr=
opbox.com/u/19882028/LF/UHF%20Link.JPG</a><br>
  <br>
Not sure if the antenna has enough gain for the distance but i expect
it will be ok.<br>
  <br>
Note that i am using the <b>active ferrite antenna for RX</b>. Thus it
may happen that i am nulling out a calling station, so it is worth to
call several times, if you like.<br>
  <br>
The PTT of the TX is quasi connected to the squelch LED of the UHF RX.
That works very fine up to &gt;125 Bpm. But maybe it opens sometimes
due to a local noise. To the PTT circuit i have added a time limiting
watchdog circuit that limits such an unwanted opening to about 10
seconds.<br>
  <br>
So, looking forward to some <b>QSOs</b> or at least a succesful
testing. BTW there is no possibility to answer in QRSS. It is still CW
exclusively!<br>
  <br>
73, Stefan/DK7FC<br>
  <br>
  <br>
</blockquote>
</body>
</html>

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