Re: LF: OPDS32, first Europe to South America

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

Alan,

Thanks for the comments, always apprechiated.

73, Stefan

Am 09.12.2013 13:58, schrieb Alan Melia:
> Hi Stefan
> > which again confirms that this path is less (not?) affected by solar 
> > activity. Same as on the path to VK..
> I wouldnt quite say that :-))  the Dst was rising rapidly and was 
> nearer -30nT over that period. The YV route my be a little as 3 hops 
> with a couple of "salt water bounces", as Markus says you nearly made 
> in the previous night at a Dst of probably around or slightly above 
> -60nT. By comparison the VK route is probably at least 5 hops so you 
> are looking at 25dB more.....certainly need a little wind behind you 
> :-)) but there may be more opportunities than just at the equinox, 
> though the darkness period is most advantageous then.
> Unfortunately Dst doesnt predict a good result, rather the better 
> probability a result. There are a confusingly wide range of results 
> even on a high Dst night.
> Well done on these tests! It certainly is good to see marginal 
> conditions probed, and a few "urban myths" tested :-))  The deep 
> search has certainly enabled us to peep under the normal noise barrier 
> and see what is actually possible in these paths. If you dont see 
> anything you dont know whether the signal it is a couple of dB below 
> detection or -100dB in other modes.
> Alan
> G3NYK
>
>
> ----- Original Message ----- From: "Stefan Schäfer" 
> <Stefan.Schaefer@iup.uni-heidelberg.de>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Monday, December 09, 2013 10:26 AM
> Subject: Re: LF: OPDS32, first Europe to South America
>
>
> Martin, LF,
>
> Most amazing. There were even 7 decodes last night!!!
>
> YV7MAE FK81BD Opera-32 correlation 
> http://df6nm.bplaced.net/opera/opds.zip
>    date      time   call   distance  frequency bandwidth  snr correlation
>
> 2013-12-09 05:58:12 DK7FC   7812km 137572.816Hz   4mHz -45.0dBOp 100% 
> 18.8dB
> 2013-12-09 05:23:10 DK7FC   7812km 137572.811Hz   3mHz -41.6dBOp 100% 
> 21.2dB
> 2013-12-09 04:48:09 DK7FC   7812km 137572.810Hz   3mHz -45.5dBOp 100% 
> 18.7dB
> 2013-12-09 04:13:09 DK7FC   7812km 137572.808Hz   2mHz -49.2dBOp  87% 
> 17.5dB
> 2013-12-09 03:03:07 DK7FC   7812km 137572.807Hz   3mHz -49.0dBOp 100% 
> 17.7dB
> 2013-12-09 01:53:05 DK7FC   7812km 137572.805Hz   9mHz -48.3dBOp 100% 
> 15.6dB
> 2013-12-09 00:22:45 DK7FC   7812km 137572.800Hz   8mHz -45.7dBOp 100% 
> 17.0dB
> This is the first night and all night before produced not even a 
> single decode.
> DST levels were arround -40 nT 
> (http://lasp.colorado.edu/space_weather/dsttemerin/dsttemerin.html) 
> which again confirms that this path is less (not?) affected by solar 
> activity. Same as on the path to VK..
> Thanks for the receive site in Venezuela!
>
> 73, Stefan/DK7FC
>
>
> Am 09.12.2013 03:28, schrieb Maritn A. Echazarreta D.:
> > Yesss Stefan!!!!
> > Congrats again!!!
> > 2013-12-09 01:53:05 DK7FC   7812km 137572.805Hz   9mHz -48.3dBOp 100% 
> > 15.6dB
> > 2013-12-09 00:22:45 DK7FC   7812km 137572.800Hz   8mHz -45.7dBOp 100% 
> > 17.0dB
> > YV7MAE
> > Martin.
> >
> > 2013/12/8 Stefan Schäfer<Stefan.Schaefer@iup.uni-heidelberg.de>:
> >
> > > LF!
> > >
> > > Just a few minutes ago i saw the first decode of DK7FC on Martin's 
> > > YV7MAE LF
> > > OPDS monitor in FK81BD:
> > > http://dl.dropboxusercontent.com/u/74746618/LF/YV7MAE_LF_Grabber_OPDS.html 
> > >
> > > 2013-12-09 00:22:45 DK7FC 7812km 137572.800Hz 8mHz -45.7dBOp 100% 
> > > 17.0dB
> > > I've manually updated the page each few minutes and hoped for a 
> > > decode and
> > > now here it is :-)
> > >
> > > Hope i can do it a few times more this night :-)
> > >
> > > This is the path:
> > > https://dl.dropboxusercontent.com/u/19882028/LF/DK7FC_YV7MAE.png
> > >
> > > 73, Stefan/DK7FC
>
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