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

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

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)