Message-ID: <4EE4D52E.4060804@iup.uni-heidelberg.de>
Date: Sun, 11 Dec 2011 17:07:10 +0100
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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References: <4EE4AA70.9030106@iup.uni-heidelberg.de> <4EE4BCA9.16213.4794FC4@mike.dennison.ntlworld.com>
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Subject: Re: LF: Sunday afternoon CW activity / entertainment ;-)
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Hello Mike, LF,

Thanks for trying.
Yes indeed, there were some problems again, this is VERY (!!) annoying!! 
Why must there always be a problem on the RX side???? ...
The location was very nice and the WX too. A good and quiet place. I 
heared my signals at > 100 dB S/N. But Markus/DF6NM was just 30 dB S/N 
in 488 mHz (QRSS-3). He was audible but should have been stronger.

My apologies for again having not really a useful RX for farer signals.

Seems i have to work on the /p RX again. There was a self oscillation in 
the preamp stage on the ferrite antenna that may have caused a low 
signal level. I will check that today and will work on a better design. 
There are 6 turn for driving the preamp JFET which was working well but 
i thought a bit more would be better, to stay 15 dB above the soundcard 
noise even in quiet days.....

Anyway thanks to all who tried and to DF6NM who gave me some kind of 
feedback. It's all a bit more difficult with a /p equipment that has to 
find its place in a backpack... I will try to listen now on 136.5 from 
the grabber antenna which is sourrounded by higer local QRM levels. 
Anyway it may perform better than i expect. Also i like transmitting...

At least the remote link worked well and location was very nice, see a 
photo with the river Neckar in the background (old mobile phone photo): 
http://dl.dropbox.com/u/19882028/LF/LF-P_11122011.jpg

If possible i will give it a try on the next weekend and will work out a 
design for a remote RX in the forest to stay QRV from home permanently...

73, Stefan/DK7FC

Am 11.12.2011 15:22, schrieb Mike Dennison:
> Good CW signal (559) from DK7FC/P but he cannot hear my calls.
> I am visible on DF6NM's grabber and have had several CW QSOs
> with DL in the past, so I think Stefan has some receive problems
> at his portable site.
>
> Mike, G3XDV
> ==========
>
>    
>> I'm going to do a CW activity now with my portable equipment and will
>> be QRV on *136.5 kHz in CW *from a portable location in the forest,
>> some 2 km distant to the man made noise. It's cold outside so it
>> depends on the activity how long i will be QRV.
>>
>> QSOs or reports are highle apprechiated. Conds seem to be excellent
>> for local CW.
>>
>> I expect you will hear my signal :-)
>>
>> Looking forward to hear you. QRV in about 30 to 45 minutes. I'm using
>> my ferrite antenna so maybe it is necessary to call several times in
>> case you are in the null of the pattern...
>>
>> 73, Stefan/DK7FC
>>
>>      
>
>