Re: LF: VLF - distances achjeved

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Mal,

The evidence to prove the reception of Stefan's VLF signals is very strong indeed. Take a look at the various postings and screenshots here and at the various grabbers and websites. 

73s
Roger G3XBM

On 15 December 2010 18:51, mal hamilton <g3kevmal@talktalk.net> wrote:

But Markus

How does anyone know that the faint trace was Stefan without an ID. I wish everyone success but there is so much guesswork about. I need to be  convinced and no way would I claim any hits without a proper callsign ID on a frequency.

I saw a  trace appear once and it was suggested by a VE7 station that it was my neighbours toaster, but by conincidence iit came on and off roughly at the same time as the DK carrier transmission.

 

G3KEV

 

----- Original Message -----

From: Markus Vester

To: rsgb_lf_group@blacksheep.org

Sent: Wednesday, December 15, 2010 6:30 PM

Subject: Re: LF: VLF - distances achjeved

Hi John,

 

weIl I think I can claim reception of my 90 uW ERP kite signal on 6470 Hz by Paul Nicholson on November 13:

http://abelian.org/vlf/tmp/mv101113a.gif

Transmitter near Nuernberg at 49.3874 N 11.1692 E, receiver Todmorden 53.703N 2.072W, distance about 1034 km according to

http://www.movable-type.co.uk/scripts/latlong-vincenty.html.

 

But on the other hand, it looks like on December 4th, 4X1RF saw at least a very faint trace of Stefan on 6470 Hz as well.

 

Best wishes,

MArkus

-----Ursprüngliche Mitteilung-----
Von: Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>
An: rsgb_lf_group@blacksheep.org
Verschickt: Mi., 15. Dez. 2010, 14:21
Thema: Re: LF: VLF - distances achjeved

Ah John,

Sorry, there is another bug: The QTH of the kite antenna is JN49IS36VH, near Darmstadt.
The Earth antenna is in Heidelberg, JN49IK67

I have changed the entries in the list below.

73, Stefan

Am 15.12.2010 12:04, schrieb Stefan Schäfer:

Hi John,

Am 15.12.2010 11:55, schrieb John Rabson:

I am writing a piece on VLF for the Cave Radio & Electronics Group Journal and would like to include distance records.  Can people please confirm that the following information is correct (or not)?

Above-ground antennas

Hz	ERP mW	From	To	km
8970	58	Darmstadt	Israel/Haifa	2873
6470	9	Darmstadt	Poland/Warshaw	904
5170	5	Darmstadt	Poland/Warshaw	904

The QTH of SQ5BPF is Washaw. The rest is correct.

Earth current antennas

Hz	TX power W	Electrode spacing m	From	To	km
8970	250	600	Heidelberg	Roschbach	49.6

I did successful tests to Roschbach just on 8970 Hz, not on 6470 and 5170. The distance is 49.6 km (since my earth antenna QTH is different to the kite antenna QTH).

Thanks too.

73, Stefan/DK7FC

Thank you.

John F5VLF

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