Re: Re: Re: Re: LF: 8970,022Hz

[uwe-jannsen@kabelmail.de]

Hi Graham, Stefan and Markus,

sri, the TX is still off. Too wet here around

Yes, Stefan, your grabber rcvd the emissions completely.

Graham, I think you mean my equipment. It’s a resonant Marconi design excited by a field winding totally isolated from it. It is tuned by moving one coil into the other or vv. Makes abt 3,5km coil wire, 17m vertical and 300m top wire sloping down to abt 10m. All 1,7mm Litze.

GL
Uwe/dj8wx jo43sv

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Von: rsgb_lf_group@blacksheep.org
Gesendet: 03.12.2013 00:14
An: rsgb_lf_group@blacksheep.org
Betreff: Re: Re: Re: LF: 8970,022Hz

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Uwe,

 

Do  you  have  any   info  on the  tuner/matching  system ?

 

Tnx -G,

From: uwe-jannsen@kabelmail.de

Sent: Sunday, December 01, 2013 4:30 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: Re: Re: LF: 8970,022Hz

Hi all,

the TX was off from 1348UTC until 1534UTC. I had to repair the antenna.

One of the top load wires came down. The ribbon behind the isolator changed to coal

(corona effect during rain periods).

Tks for reports.

Sri for the QRM, Markus.

GL

Uwe/dj8wx jo43sv

 

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Von: rsgb_lf_group@blacksheep.org
Gesendet: 01.12.2013 14:12
An: rsgb_lf_group@blacksheep.org
Betreff: Re: Re: LF: 8970,022Hz

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Hi Uwe,

 

no luck here so far. The primary reason seems to be a slightly unstable QRM line centered on 8970.3 Hz, probably one of many emitted by the railway line 400 m away (see lower part of grabber window). For me, eg. 0.2 Hz lower would be a clear frequency. But as QSY from your side would imply reparking all the other grabbers, I guess I'll just have to live with it for the time being. Will keep on trying anyway...

 

Best 73,

Markus (DF6NM)

From: Markus Vester

Sent: Friday, November 29, 2013 1:37 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: Re: LF: 8970,022Hz

The DARC homepage server and ftp access procedure have recently been modified. I've restarted the temporary VLF grabber at

http://www.df6nm.darc.de/vlf/vlfgrabber.htm

 

Good luck!

73, Markus (DF6NM)

From: uwe-jannsen@kabelmail.de

Sent: Friday, November 29, 2013 12:04 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: Re: LF: 8970,022Hz

Hi Markus, Jim, Laurence and Eddie,

on the air agn since 1043UTC. it will stay so the coming hours. tomorrow the same procedure as today.

mom it is raining.

yes, Markus, it is the same ant and the same pwr (a new DJ 4kW-PA, output reduced to 500W). and no, I don’t know what it is at -38mHz. Paul will know, I guess.what abt ur grabber? new URL?

GL
Uwe/dj8wx jo43sv

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Von: rsgb_lf_group@blacksheep.org
Gesendet: 29.11.2013 10:16
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: 8970,022Hz

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Wonderful news Uwe

I had to abandon the attempt to find you last night as my storage battery failed.  :-(

This morning using Solar Power my RX is just up and producing the first display.

I assume you are still on as I have peak at 9870.022Hz. In 424uhz, the 47uhz window is not ready yet.

 http://www.g3zjo.talktalk.net/vlfgrabber.htm

Now for some battery work down in a cold shed  so i can continue after dark.

73 Eddie G3ZJO

On 28/11/2013 18:37, uwe-jannsen@kabelmail.de wrote:

On the air agn. Pse see

http://abelian.org/vlf/fbins.shtml#p=1385658000&b=080&s=sp

output abt 500Wrms into 300m wire (L shape, tops sloping dwn from 17m to 10m).

GL

Uwe/dj8wx jo43sv