Re: LF: AW: RE: RE: DK7FC's 8th VLF kite experiment

["Markus Vester" <markusvester@aol.com>]

Unfortuntely, no signals on 8970 or 6470 have come up in Northern Israel yet. This is likely due to my rather insensitive receiving conditions here. There may be another chance if Stefan decides to come back on 8970 with his 300 m kite line.

 

From 8:50 to 9:03, a sloping trace from SAQ appeared around 17.2 kHz.

 

Best 73,

Markus (4X / DF6NM)

 

 

From: Scholz, Marco

Sent: Saturday, October 23, 2010 1:41 PM

To: 'rsgb_lf_group@blacksheep.org' ; 'paul@abelian.netcom.co.uk' ; 'contact@vlf.it' ; 'Guido.Barzen@URANO.de' ; 'bernd.grupe@t-online.de' ; 'christian@axtmaenner.de' ; 'Bernd.Strehhuber@planb.de' ; 'george@vastianos.com'

Subject: LF: AW: RE: RE: DK7FC's 8th VLF kite experiment

Stefan decided to send only one character. After that he increase the antenna to 300m and qsy to around 5.17KHz.
I announce exact qrg later.
DD7PC

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Von: Scholz, Marco [ICG-IT]
An: 'rsgb_lf_group@blacksheep.org' <rsgb_lf_group@blacksheep.org>; 'paul@abelian.netcom.co.uk' <paul@abelian.netcom.co.uk>; 'contact@vlf.it' <contact@vlf.it>; 'Guido.Barzen@URANO.de' <Guido.Barzen@URANO.de>; 'bernd.grupe@t-online.de' <bernd.grupe@t-online.de>; 'christian@axtmaenner.de' <christian@axtmaenner.de>; 'Bernd.Strehhuber@planb.de' <Bernd.Strehhuber@planb.de>; 'george@vastianos.com' <george@vastianos.com>
Gesendet: Sat Oct 23 11:52:08 2010
Betreff: RE: RE: DK7FC's 8th VLF kite experiment

Hello,

Another short update.

DK7FC, Stefan started to TX on 6.47KHz (you can check on http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html)

Jacek your report and rx setup is really good. My QTH is only abt. 60Km from Stefan away and I receive him not better then you.

 

Stefan will tx now a carrier for 30-40min and after this he send again a 2 character message in DFCW600.

 

Then he will QSY to +/- 5170Hz. Stefan is not 100% sure about the frequency.

 

Regards

Marco

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Scholz, Marco [ICG-IT]
Sent: 23 October 2010 12:21
To: 'rsgb_lf_group@blacksheep.org'; 'paul@abelian.netcom.co.uk'; 'contact@vlf.it'; 'Guido.Barzen@URANO.de'; 'bernd.grupe@t-online.de'; 'christian@axtmaenner.de'; 'Bernd.Strehhuber@planb.de'; 'george@vastianos.com'
Subject: LF: AW: RE: DK7FC's 8th VLF kite experiment

 

FYI!
Stefan, DK7FC stopped now the transmission on 8970Hz and QSY to 6470Hz.

vy73
Marco, DD7PC

 

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Von: Scholz, Marco [ICG-IT]
An: 'rsgb_lf_group@blacksheep.org' <rsgb_lf_group@blacksheep.org>; 'Paul' <paul@abelian.netcom.co.uk>; 'Renato Romero' <contact@vlf.it>; 'Barzen, Guido' <Guido.Barzen@URANO.de>; 'Bernd Grupe' <bernd.grupe@t-online.de>; 'Christian Axtmann' <christian@axtmaenner.de>; 'Bernd Strehhuber' <Bernd.Strehhuber@planb.de>; 'George Vastianos' <george@vastianos.com>
Gesendet: Sat Oct 23 10:02:10 2010
Betreff: RE: DK7FC's 8th VLF kite experiment

Hello LF,

Many thanks for reports from Victor, Henny, Jim and Jean-Pierre so far.

I had Stefan on the phone 5min. ago and passed to him this information.

Stefan told me the weather is perfect with very stabile wind conditions. He has around 900mA antenna current and 550W Pout.

 

Please note DK7FC will stop shortly the carrier (which was on for abt. 1h) and switch to DFCW600. He will transmit 2 characters and after this transmission he will change the QRG to 6470Hz.

 

vy73

Marco, DD7PC

 

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Stefan Schäfer
Sent: 21 October 2010 17:26
To: rsgb_lf_group@blacksheep.org; Paul; Renato Romero; Barzen, Guido; Bernd Grupe; Christian Axtmann; Bernd Strehhuber; George Vastianos
Subject: VLF: DK7FC's 8th VLF kite experiment

 

Dear VLF,

This weekend i plan to do my next kite experiment. I have got the permission for a kite ascent up to 300m above GND on my QTH in JN49IS36VH.

I will be QRV either on saturday or on sunday, depending on the wx. Attached you see the current wind forecast. For saturday the wind is not optimal, a little weak but it will be dry. On sunday the wind is quite strong and stable but there is probably some rain... I will have to see on friday evening if i can start on saturday or sunday and will announce that here.

If i will start on sunday, where the SAQ transmission takes place, this will be no problem since one can listen to SAQ and receive my transmission on an other computer based RX (e.g. SpecLab), so both can be done to the same time :-).

The starting time should be as early as possible. I have the permission at 6...16 UTC!

The program is to...

- rise the 200m vertical and transmit a long carrier (30 min) on 8970 Hz, after that a message in DFCW-600 and after that a message in DFCW-120, then a short CW test.
- transmit on 6470 Hz in DFCW-600 hoping to be copied at further stations (maybe M0BMU, SQ5BPF, OE3GHB, PA3FWM...?)
- if the wind will be optimal i will add another 100m and will try to transmit at 5170 Hz, 58 km band. This might be once again the lowest frequency an amateur has ever transmitted and reached the far field and above 1 Lambda, so each reception will be a WR for amateurs ;-) BTW, my grabber in Heidelberg is in < 1 Lambda ;-) The mode will be DFCW-600 as well.
- Then, coming back to 8970 Hz (maybe in the late afternoon) and transmit a looong carrier for long time integrations, maybe for a new ODX.
- reach 1,4 A at 8970 Hz, 1 A at 6470 and 5170 Hz
- be detected at 3 new stations and a new ODX ;-)
- use a GPS disciplined transmitter (trying SpecLab as the VFO and DFCW generator the first time)
- measure the R, 'C' of this 300m vertical on 137 kHz, preparing a new test there ;-) Since it is 55 % of a full size lambda/4 GP, 5 pF/m is not valid i assume
- be fascinated by the view of such an antenna which easily finds place in my car after the test ;-)

Until now i don't know who of the german LF group members would be possibly on the phone to make QSP to the reflector, just like Markus did it in the past. If there is a german member who likes to do that job, please send me a personal mail to exchange the phone numbers (Festnetz oder O2). Otherwise i have to play my game there alone and will see what happend in the evening ;-)

BTW, the generator is running again. It started to run again just as i have packed all my stuff in the car after the last experiment :-/ Never mind...

Have i forgotten something?

Please tell me if you think it is no good idea to transmit during the SAQ transmission or what is your favorite day, if both is possible here. I would prefer sunday, if the rain forecast changes to sunny :-)

73 and looking forward to the weekend :-)

Stefan/DK7FC