From: Gerhard Hickl <gerhard.hickl@aon.at>
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <3b90ebeb91e44829a9f470214c4894a6@kabelmail.de>
References: <3b90ebeb91e44829a9f470214c4894a6@kabelmail.de>
Date: Thu, 03 Mar 2011 19:13:18 +0100
Message-ID: <1299175998.16799.16.camel@gerhard-desktop>
Mime-Version: 1.0
Subject: Re: LF: Who is transmitting on 8970.022 Hz??
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


Hello Uwe and welcome on board!

Congratulations to your success. I wondered about the signal on my
grabber and asked Stefan if he is aware of any experiments going on down
there. But like me he had no clue.

Luckily the riddle is solved now. Markus, Stefan, Ossi and I have
observed some VLF propagation effects recently and your activity will
increase our knowledge (or guesswork) even more.

So just keep on transmitting as long as possible and do for your wife
what Markus already proposed! By a pair of rubber gloves.

73 es tnx

OE3GHB
Gerhard


Am Donnerstag, den 03.03.2011, 16:19 +0100 schrieb
uwe-jannsen@kabelmail.de:
> 
> Hi all,
> 
>  
> 
> its no longer a secret :
> 
> Stefan and Markus found a carrier at 8970,022Hz on Stefans and
> Gerhards grabber and I had to confess that its origin is my QTH
> because the TX was switched on at 1740UTC yesterday and that matches
> the visibility of the carrier on Gerhards grabber.
> 
>  
> 
> My aerial: pse see
> 
>  
> 
> http://dj8wx-dl.de/hompage500kHz/TX%20equipment.htm
> 
>  
> 
> second last pic on the site. The 23m long wire has been lengthened by
> an other 20m.
> 
> The radiasls have a overall length of  500m.
> 
>  
> 
> I tried a measuring of the current between  the footpoint of the
> matching coils and the radials:
> 
> Sri, but the meter doesnt show more than 200mA and its far > than
> that.
> 
>  
> 
> The TX bumps 7,5A at 284Vpp (753Wrms) into the field coil of 134uH (Z
> 7,5 Ohm).
> 
>  
> 
> The diameter of the circuit single layer winding coils: on average
> 60cm.
> 
> inductivity: 245mH.
> 
>  
> 
> The generator is a homebrew BPU lf-exciter with the possibility of all
> usual kinds of modulations. 
> 
>  
> 
> The class E PA makes 2,4kWrms on NF. I could get 1700Wrms out of this
> (misused) disco PA on 9kHz. 
> 
> 
> When I did so the consequence was:  One couldnt touch any garden hand
> tools or other things longer than 50cm. 
> 
> 
> Txing with 750W: My XYL doesnt shriek any more when working in the
> garden and touching p.e. the barrow.
> 
>  
> 
> Best regards
> 
> Uwe/dj8wx still txing a carrier on 8970,022Hz. In some days Ill send
> in qrs6000.
> 
>  
> 
> 
> 
> 
> ______________________________________________________________________
> Von: rsgb_lf_group@blacksheep.org
> Gesendet: 02.03.2011 16:20
> An: rsgb_lf_group@blacksheep.org
> Betreff: LF: Who is transmitting on 8970.022 Hz??
> 
> ______________________________________________________________________
> 
> VLF,
> 
> Someone is transmitting on 8970.022 Hz, visible in my "DFCW-6000"
> window 
> and visible at OE3GHB! It is neither Markus nor Ossi nor Gerhard nor
> me, 
> so who is it??? :-)
> Frequency is very accurate over time!
> 
> On 8969.97 i am doing a local test so pse don't wonder.
> 
> 73, Stefan/DK7FC