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Re: LF: Slow JT9 modes...

To: [email protected]
Subject: Re: LF: Slow JT9 modes...
From: DK7FC <[email protected]>
Date: Thu, 06 Sep 2018 13:25:45 +0200
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Paul,

Am 06.09.2018 13:03, schrieb N1BUG:
I have been trying for almost a year to get WSJT-X 0.95 to run under
Windows 10 but it keeps crashing. Unfortunately I do not have a PC
with an older version of Windows I can try. I do not know if Windows
10 is the problem or whether 0.95 was simply never stable.
I remember it worked well. But of course not on Windows10.
  Even if I could get 0.95 to stay running, QSO
partners would be limited. I know that others have tried and failed
with this version.
QSO partners will be very limited anyway.
They didn't fail with this version, they failed with Windows10!

I guess we are stuck with DFCW. Old school still works but I would
like some other alternatives.
As mentioned, there is the special program from DF6NM which allows to run WSPR-15 together with the latest version of WSPR-2. But it is not just a thing of a few mouse clicks to get it running. You need to learn how it works and how to install, which already leads to limited QSO partners...


73, Stefan

PS: Two old email attached. The good old times, you know...
--- Begin Message ---
To: <[email protected]>
Subject: LF: Experimental software for WSPR-8 and -32
From: "Markus Vester" <[email protected]>
Date: Fri, 21 Sep 2012 23:53:28 +0200
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For those interested, the slowWSPR utilities can be downloaded at
 
 
There is a readme file which will hopefully give you an idea of how to proceed. But beware, this is all very improvised, please don't expect plug and play...
 
Best 73,
Markus (DF6NM)
 

Sent: Friday, September 21, 2012 2:07 AM
Subject: WSPR-8 Test

First decodes using 8-minute WSPR:
 
2012-09-21 00:00   DK7FC   0.137508   +7   0   JN49ik   1   DF6NM   JN59nj   175   91 
2012-09-20 23:52   DK7FC   0.137508   +3   0   JN49ik   1   DF6NM   JN59nj   175   91 
2012-09-20 23:44   DK7FC   0.137508   -4   0   JN49ik   1   DF6NM   JN59nj   175   91 
Between 23:36 and 23:43:20, Stefan was transmitting 8-times slow WSPR with low power on 136172 Hz. This was recorded here to an IQ file using SndInput from DL4YHF, and replayed 8x fast during the next 2-minute slot, starting 23:44. In the process the audio was frequency shifted from 670 to 2000 Hz, and added to the normal audio data for WSPR.  Thus with the 4x acceleration, Stefan's transmission appeared 8 instead of 2 Hz above center.
 
This is all still a bit improvised, but the concept seems to work.
 
Best 73,
Markus (DF6NM)
 

--- End Message ---
--- Begin Message ---
To: <[email protected]>
Subject: Re: LF: Re: Experimental software for WSPR-8 and -32
From: <[email protected]>
Date: Sat, 22 Sep 2012 20:55:38 -0400
References: <7F2208077DA448F78F384AF5B55DECA0@White> <[email protected]> <[email protected]> <829FB31FADAD4D4682EC509D2416C9F4@AGB> <005d01cd98fe$74bc6030$0501a8c0@xphd97xgq27nyf> <[email protected]> <[email protected]>
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Stefan
 
Thanks for the test signal ... and thanks to Markus and Wolf for the tools! Got in early evening and was hurrying to get things patched together and lined up ... thus the frequency mistke on the first decode.
 
Dst is at a favorable at -16 nT but static is up a bit tonight due to a cold front approaching to the west. In fact, thunderstorms are predicted so I may have to make a quick exit a bit later!
 
Congrats to you and Markus!
 
Jay W1VD  WD2XNS  WE2XGR/2
   
----- Original Message -----
Sent: Saturday, September 22, 2012 8:21 PM
Subject: Re: LF: Re: Experimental software for WSPR-8 and -32

Jay,

Thank you once again! Congrats to your equipment!

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
 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 

How do you estimate the conds today? From your experience, is the SNR improvement of WSPR-8 significantly? Hard to estimate if it is really 6 dB...
Will see how things proceed in the night.
8 minutes is still a good time to detect changes in propagation..

73, Stefan/DK7FC

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