Re: LF: EbNaut from Todmorden - success!

[Markus Vester <markusvester@aol.com>]

The carrier became much stronger later, and I got the first decode after 21 UT:

"G8LMD IO83XQ"
137455 Hz 8K19A 12 ch 848*2 s

Sat. 2016-03-12

start  car. sym.
 UT    dB   dB

21:00  0.2  2.9
22:00  5.0  7.3
23:00  3.6  5.7

Well done Paul!

Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 12 Mrz 2016 10:17 pm
Betreff: Re: LF: EbNaut from Todmorden

Looks like I'm getting some carrier on 137455 but it's not very strong here (about 12 dB in 0.438 mHz). Stefan's opds spectrogram is plagued by a set of spurs in that vicinity. Maybe 137465 looks a bit cleaner, and equally clear of Mike's strong Opera transmission on 137460.06 Hz

 

Best 73,

Markus

 

 

From: Paul Nicholson

Sent: Saturday, March 12, 2016 8:09 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: EbNaut from Todmorden

Looking at Gary's page

  http://myweb.tiscali.co.uk/wgtaylor/grabber2.html

My signal shows up well on grab 2 but grab 3 there are
some glitches which I can't account for.

And scrolling down to grab 5 there's a signal on 8270
today which doesn't appear on my spectrogram here.
Perhaps Gary is doing some near field testing.

So far I don't seem to be making any impression on
Markus' receiver at

  http://www.df6nm.de/grabber/Grabber.htm

but the signal is clearly getting as far as Heidelberg

  http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_DX_Grabber.html

Looking to change frequency soon.  Stefan advises 137.5 +/- 50Hz
to make use of OPDS receivers and Domenico suggested the lower
end of that band.  So maybe I will try

  Frequency: 137455.00000 Hz
  Coding: 8K19A
  Chars: 12
  Symbols: 848 at 2 seconds
  Duration: 1696 seconds, 00:28:16.00
  Repeat: Each hour, XX:00

Will start at 20:00 unless anyone has a better suggestion.
Probably QRT at 00:30 after the 00:00 message has completed.

--
Paul Nicholson
--

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