Message-ID: <4FB2A274.3060506@iup.uni-heidelberg.de>
Date: Tue, 15 May 2012 20:37:40 +0200
From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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CC: "YV7MAE Maritn A. Echazarreta D." <yv7mae@gmail.com>
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Subject: Re: LF: Re: DK7FC in South America
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Hi Alan,

Am 15.05.2012 12:41, schrieb Alan Melia:
> Well done Stefan and Martin.
Tnx!
> I guess Stefan that the path is 4 hops and at
> least 3 are probably over water. It may not be that much better in wint=
er.
>   =20
We will see. I'm looking forward to observe that path over a longer time=20
now. We know, it's not only propagation but also the absence of QRN what=20
is needed. May be an interesting combination there, so close to the=20
equator..

> You want stable conditions for that speed QRSS.
>   =20
Yes. If a loop is used (even if it's a normal loop) i think we can get=20
another 6 dB without problems, just after Martin's sunset. The the loop=20
cancels or reduces the signals from NW and SE and the backside is still=20
quiet, because in daylight.. Then, with these 6 dB improvement, we can=20
go to QRSS-60, so the QSB is not that critical...

73, Stefan/DK7FC

> Best Wishes
> Alan
> G3NYK
>
> ----- Original Message -----
> From: "Stefan Sch=E4fer"<Stefan.Schaefer@iup.uni-heidelberg.de>
> To:<rsgb_lf_group@blacksheep.org>; "YV7MAE Maritn A. Echazarreta D."
> <yv7mae@gmail.com>
> Sent: Tuesday, May 15, 2012 1:29 AM
> Subject: LF: DK7FC in South America
>
>
>   =20
>> LF!
>>
>> I just wrote to Martin/YV7MAE:
>>
>> /May, the 15th 2012! 00:12 UTC. YV7MAE received first traces of DK7FC =
on
>> 136.172 kHz in DFCW-180. Excellent reception of DCF39 too and low QRN/=
M,
>> after several antenna system improvements!
>> This is a first detection of a German amateur radio signal in South
>>     =20
> America!
>   =20
>> Congratulations!
>> /
>> I can see it live via the remote link, the grabber is still not update=
d
>> (each 10 minutes).
>>
>> After another change in the antenna wire location (higher, longer..., =
i
>> can't stop him to improve each day), DCF39 showed up about 30 dB S/N i=
n
>> 1 Hz NBW (without noise reduction). I started the TX immediately. Afte=
r
>> a few minutes i saw my K just 0.1 Hz below 136.172 kHz, as Markus
>> mentioned in the recent days.
>>
>> It is still the long wire, about 80m, matched with a resonant circuit =
on
>> a ferrite rod which Martin is using. If this path works in the middle =
of
>> May, what will it look like in winther? And what when a directional
>> antenna is used?
>>
>> I still can't belive it!
>>
>> The capture is now on the grabber and will be saved in the archive sit=
e
>> which a added today.
>>
>> My God, now the 7 is coming in!!!!!!!!!!!!!!! That is worth _*ALL*_ th=
e
>> effort, by far!!!!
>>
>> The path is 7818 km distant,
>> http://no.nonsense.ee/qthmap/?qth=3DFK81BD&from=3Djn49ik00wd
>>
>>
>> Take a look: http://dl.dropbox.com/u/74746618/LF/YV7MAE_LF_Grabber.htm=
l
>>
>> 73, Stefan/DK7FC
>>
>>     =20
>   =20