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Re: LF: Re: Experimental software for WSPR-8 and -32

To: [email protected]
Subject: Re: LF: Re: Experimental software for WSPR-8 and -32
From: Stefan Schäfer <[email protected]>
Date: Sun, 23 Sep 2012 14:46:00 +0200
In-reply-to: <6ECF47A4215C4DED9E68C3058165ACD5@White>
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Hi Markus, Jay, Terry, Chris, LF,

Thanks for the yesterdays WSPR-8 tests!

Somehow i thought there would be a more general interest in these experiments but maybe it is to complex? Don't know... Another effect may be that we try daily change the modes. But this is experimenting. I hope that WSPR-32 will be a more serious alternative. From what we saw in WSPR-8, WSPR-32 must be very promising and i'm optimistic to have a decode from Venezuela!

The line on the map: https://dl.dropbox.com/u/19882028/LF/WSPR-8_test.png to W1VD is very bulky :-)
There were 11 decode by W1VD:
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
 2012-09-23 05:08   DK7FC   0.136164   -23   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 03:48   DK7FC   0.136164   -25   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 03:28   DK7FC   0.136164   -27   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 02:48   DK7FC   0.136164   -27   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 02:28   DK7FC   0.136164   -26   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 02:08   DK7FC   0.136164   -23   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 01:28   DK7FC   0.136164   -25   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 01:08   DK7FC   0.136164   -27   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 00:28   DK7FC   0.136164   -26   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-23 00:08   DK7FC   0.136164   -27   0   JN49ik   1   W1VD   FN31ls   6099   295 
 2012-09-22 23:48   DK7FC   0.136223   -26   0   JN49ik   1   W1VD   FN31ls   6099   295 

Only 2 of them would have been in the range for WSPR-2 decodes. So the slower mode certainly helped to cover a wider time range.

There are 3 grabbers showing the occupied bandwidth of WSPR-8 and later WSPR-32:

http://qsl.net/4x1rf/yo/lfgrabber.htm
http://www.alice-dsl.net/df6nm/grabber/Grabber.htm
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_DX_Grabber.html

Markus, i would agree to move to WSPR-32 now. Same QRG. Will be interesting to see the new spectrograms and the possible distances! :-) Oh, i musn't forget to add a switch across the cap of the watchdog timer ;-)

73, Stefan/DK7FC




Am 23.09.2012 10:53, schrieb Markus Vester:
Thanks very much Jay, Terry and Chris for taking the effort to receive and report our experiment, and of course to Stefan for suggesting it in the first place. I think the expected gain in sensitivity is evident, even though there is no "miracle machine" of course. I have now ended the WSPR-8 transmission from Nuernberg for today.
 
How would you like to proceed from here? Try WSPR-32 next? Perhaps a slow WSPR experiment on MF? Or wait for Joe's 8-FSK mode JT8 which might knock off another dB?
 
BTW I don't use a transverter for MF, but an FE-5680A Rubidium synthesizer which can be controlled to generate WSPR directly.
 
Best wishes, and have a nice Sunday,
Markus (DF6NM)

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