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Date: Wed, 09 May 2012 02:01:34 +0200
From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: VO1NA - Venezuela opening
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Hi Joe,

Unfortunately Martin cannot receive this night. The PC is crashed down.=20
We will have fixed it tomorrow i think.
Sri...

73, Stefan/DK7FC

Am 09.05.2012 00:49, schrieb jcraig@mun.ca:
> Thanks Stefan (and also to Dex for getting Martin's grabber images. )
> Yes, SA is continent 4, and still trying to reach the southern=20
> hemisphere!
>
> QRV again tonight. 4.7 Amps to a 100m wire at 15m.
>
> 73
> Joe
>
> On Tue, 8 May 2012, Stefan Sch=E4fer wrote:
>
>> Hi Dex, Joe, Martin, LF,
>>
>> Congratulations for the new continent Joe!! Is that your 4th?
>>
>> Dex, sunrise in YV is arround 10 UTC these days.
>>
>> There is a problem with the dropbox upload. An error massage comes=20
>> up. We will have to work on that today. However the Teamviewer link=20
>> worked and so i was able to see the ongoing SpecLab instances. XKO=20
>> was way stronger than yesterday, a clear O copy! We'll publish the=20
>> screenshots later. Probably there was also a stronger copy of VO1NA=20
>> and maybe others as well. Very interesting changing conds. Also the=20
>> wideband window is very interesting i find. It clearly shows that the=20
>> noise is 15...20 dB above the RX+soundcard noise on each frequency in=20
>> the LF band.
>>
>> Tnx to the US+CA stns for providing LF amateur signals. That is=20
>> definitively helpful to get impressions about the path and understand=20
>> the grabber as a useful device! My first mail to Martin with the idea=20
>> for a common LF project is dated *March, 29th*. And here we are! :-)
>>
>> We'll go on to play with an active E field antenna which may reduce=20
>> the loacl QRM a bit. Currently a 80m long wire is used for reception.=20
>> It is about 5m above the ground in average. One part is close to the=20
>> house. By analyzing a wav file taken in YV i saw in a fast scrolling=20
>> spectrogram that there is still significant local QRM between the=20
>> massive sferics.
>>
>> Also i think with this wav file it may be possible to find more=20
>> suitable settings for the noiseblanker. While the NB settings in DL=20
>> or EU are optimised to reduce the QRM of DCF39, there may be more=20
>> efficient settings for YV which concentrate on the sferics! So maybe=20
>> we can get another dB or even 2?
>>
>> Lastly we're having first thoughts about constructing a loop antenna,=20
>> maybe one which is sililar to the K9AY type...
>>
>> 73, Stefan/DK7FC
>>
>>
>> Am 08.05.2012 14:11, schrieb Dexter McIntyre W4DEX:
>>> John Andrews wrote:
>>>> Joe,
>>>>
>>>> It wasn't WD2XES -- I was only on from 0115 to 0200. I believe=20
>>>> that's an "O", probably from WD2XKO. The frequency calibration on=20
>>>> that screen looks a little high.
>>>>
>>>>
>>> XKO was on.  QRT at 1200 hrs.  Sunrise time at Martin's QTH?
>>>
>>> Dex
>>
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