Message-ID: <001001cc3e47$e5277430$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <4E184FFE.80403@iup.uni-heidelberg.de>
Date: Sat, 9 Jul 2011 15:52:59 +0100
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Subject: LF: Re: LF DK7FC/p Grabber from fieldday QRV
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Use the trees to support your TX antenna. I have done this before and it
works well.
G3KEV

----- Original Message -----
From: "Stefan Schäfer" <Stefan.Schaefer@iup.uni-heidelberg.de>
To: <rsgb_lf_group@blacksheep.org>
Sent: Saturday, July 09, 2011 1:56 PM
Subject: LF: LF DK7FC/p Grabber from fieldday QRV


> LF!
>
> This weekend we are on a fieldday with our local radio club.
> One of the OMs provides WLAN in the middle of the countryside,
> unbelivable! Thus i can connect to the internet and can run a grabber
> page and upload some screen captures in QRSS-3 mode.
> I am testing my new RX loop for 137 kHz. Here we have very low man made
> noise and connecting the netbooks power supply doesn't change anything
> at all :-) So i can run a permanent grabber on
> http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_Grabber4.html
>
> Please take a look and, if you can, try to appear there! :-)
>
> The receiver sensitivity was greatly improved since my last /p grabber
> in PA, about 30 dB more gain. I can see the band noise now. Maybe some 5
> to 10 dB are still missing for a perfect RX but anyway i got excellent
> reception of DF6NM who was perfect audible on 137.0 kHz in the morning
> here all over the place in a 500 Hz CW filter!
> Unfortunately i cannot answer (=TX) since here are to many trees for a
> suitable LF antenna.
>
> The antenna is oriented to null out DCF39, so it points to NNW/SSE, so
> PA and UK and OE stns should be visible well :-)
> Each picture gets saved here and i will send screenshots for each
> successful reception later.
>
> Would be glad to get some traces here, also for showing others.
>
> The grabber will be active until sunday about 11 UTC.
>
> Enjoy!
>
> Vy 73, DK7FC/p, also QRV on 30m CW.
>
> PS: There is a local trace at 137.707 kHz which comes from my LO. Will
> be removed in a few days, so maybe try 10 Hz apart from that or so.
>