Content-class: urn:content-classes:message
MIME-Version: 1.0
Date: Fri, 23 Apr 2010 13:35:59 +0200
Message-ID: <38A51B74B884D74083D7950AD0DD85E82A1BE2@File-Server-HST.hst.e-technik.tu-darmstadt.de>
Thread-Topic: LF: vlf stuff
Thread-Index: AcriSACavre2ZDIIQhyi12uK6rsfRQAjlI3f
References: <BLU146-W163A0E91E10A6B111F4D9CCF080@phx.gbl>, <4BCFF4B0.1060408@iup.uni-heidelberg.de> <31066148.488074.1271959961835.JavaMail.fmail@mwmweb078>
From: =?iso-8859-1?Q?Stefan_Sch=E4fer?= <schaefer@hst.tu-darmstadt.de>
To: <rsgb_lf_group@blacksheep.org>
Content-Type: multipart/mixed;
	boundary="----_=_NextPart_001_01CAE2D9.25875635"
Subject: AW: LF: vlf stuff
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


------_=_NextPart_001_01CAE2D9.25875635
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable


Hello Horst, VLF, LF,

On my grabber there are some carriers, even with stable frequency. But i=
 do not assume that they are ham generated ;-)
Before some days i have done a test transmission of DFCW-60, just to check=
 how it looks in the picture. The distance was 10m, so nobody has missed=
 a real experiment ;-)


Just as Markus said: The actual SpecLab Version, available at the site of=
 DL4YHF is working with a sample rate drift calibrator, recording/orientat=
ing on recerence VLF transmitters.

The 4th picture on my grabber records the ALPHA station at 11904,762 Hz wi=
th 1,2 mHz FFT resolution. One can see that it was unstable in the first=
 days the grabber was active. Now, it is also locked to GBZ and is much mo=
re stable than before! Just arround 19 UTC the calibrator failes. I assume=
 that this is caused by interferences AND the low signal level of this tra=
nsmitter on my active antenna. The low signal level is due to the internal=
 band filter that attenuates the signal arround 50dB at this fequency. Thu=
s, i will modify the filter in a next step so that the signl level will be=
 stronger, so that the calibrator can work sufficently.

Additionally i have much QRM in specific times. This is most probably due=
 to the solar panel voltage limiter. (I have now a 55Wp (slightly overkill=
ed ;-) )solar panel and a 7 Ah battery for power supply). This voltage reg=
ulator will be modifed in the next days. The circuit is already in my mind=
 ;-)

Daniele, sorry, i wanted to draw the circuit of the active antenna. I will=
 do it in the next days.

BTW, if there will be wind in the next weekend, i will do the next experim=
ent. Yesterday i have wound the new primary winding of the TX coil, suited=
 for the 320V peak voltage...

OK, see you next here and on the band :-) (have to make qrt now, here visi=
ting a friend in Bochum this weekend)...

73, Stefan/DK7FC

-----Urspr=FCngliche Nachricht-----
Von: owner-rsgb_lf_group@blacksheep.org im Auftrag von Horst St=F6cker
Gesendet: Do 22.04.2010 20:12
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: vlf stuff
=20
Hello Stefan,

the carrier on your grabber is it also PLC or is someone doing a test tran=
smission?

Maybe this was asked before. But I'm becoming old ;-))

vy73 Horst DO1KHS/DI2AN







________________________________

    Von: "Stefan Sch=E4fer" <Stefan.Schaefer@iup.uni-heidelberg.de>
    Gesendet: 22.04.2010 09:03:12
    An: rsgb_lf_group@blacksheep.org
    Betreff: Re: LF: vlf stuff
   =20
   =20
    Hi Laurence,
   =20
    Fine! Do you wish to receive an amateur radio signal there down once=
 time?
    Take a look on my dreamers band grabber (http://www.iup.uni-heidelberg=
.de/schaefer_vlf/DK7FC_VLF_Grabber.html). How about your noise background?=
 Give us an imagination/picture :-)
   =20
    Best 73 and much fun!
   =20
    Stefan/DK7FC
   =20
   =20
    Am 22.04.2010 05:32, schrieb Laurence KL1X:=20

        =20
        I had my first taste after a few year break of looking at LF/Dream=
ers "band" from a quietish location here in Oklahoma - well not that quiet=
 due to weather out to my West but apart from the mosquitoes biting parts=
 of my anatomy I wish they wouldnt have all went pretty well. I had a carr=
ier near 9khz which appears from power line PLC's but I need to do more wo=
rk - Im using M0BMU's preamp/bandpass design and a 30T loop of 18 gauge sp=
eaker wire...   http://kl1x.com/vlfsmall.jpg    a reasonable start curtail=
ed by an angry Armadillo and an apparently wild LapaApso....
        =20
        =20
        Laurence KL 1X/ Mobile 5
        ps this is my "wheels" - Battery/motor assisted pushbike.
       =20
       =20
________________________________

        Hotmail is redefining busy with tools for the New Busy. Get more=
 from your inbox. See how. <http://www.windowslive.com/campaign/thenewbusy=
?ocid=3DPID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2>=20

 =20


 <https://img.web.de/p.gif>    =20
NEU: WEB.DE DSL f=FCr 19,99 EUR/mtl. und ohne Mindest-Laufzeit!  =20
http://produkte.web.de/go/02/  =20

------_=_NextPart_001_01CAE2D9.25875635
Content-Type: application/ms-tnef;
	name="winmail.dat"
Content-Transfer-Encoding: base64
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------_=_NextPart_001_01CAE2D9.25875635--