Hi Joe,
Have sent some WAV files directly to you showing the JT4 "Asterix" issue.
It does not seem to be connected to level as it shows up when the signal is
attenuated to the point of failure.
It only shows if "No Deep Search" is selected.
I found if I renamed the wav files, I could not open them with WSJT - it
terminated.
An older WSJT crashed with an error.
Will experiment a bit more.
For the test, I peaked my beam on my GB3CSB beacon, its not quite a clear
path, but it will minimise distortion.
I then used a variable attenuator on the front end of the Rx (no preamp) to
reduce the RF level.
It was just decoding at -53db, and occasionally at -54db
With -55db in it was reliably decoding with three averages.
I might send these later, will see if I can get lower...
Mon_140115_205200_r3636-CSB direct.WAV
Mon_140115_210200_r3636-CSB-40db.WAV
Mon_140115_210800_r3636-CSB-50db.WAV
Mon_140115_213600_r3636-CSB-53db.WAV
Will any of the DS options work with the beacon text "GB3CSB IO75XX" ?
Thanks, David GM6BIG
----- Original Message -----
From: "Joe Taylor" <[email protected]>
To: "WSJT Devel" <[email protected]>
Sent: Wednesday, January 15, 2014 7:18 PM
Subject: Re: [Wsjt-devel] [WSJT-SVN] WSJT r3619 - Asterix's ?
David --
For example, in the line:
170800 9 -10 0.1 -46 7 * GB3CSB IO75XX 1***** A
The * after the 7 indicates that the message contained the "normal" sync
pattern for JT4. (Messages containing a signal report use an inverted
sync pattern.)
The ***** near line end is the result of a "quality" estimator being
numerically too large to be printed in 5 columns. (You're copying a very
strong signal.)
For interest, send me a *.wav file containing a record that decodes with
the ***** symbols. I'd like to look ate it.
-- 73, Joe, K1JT
On 1/15/2014 1:45 PM, David GM6BIG wrote:
Hi All,
Should have said this is under WinXP.
Same in r3636
Cheers, DAvid
----- Original Message -----
From: David GM6BIG
To: [email protected]
Sent: Saturday, January 11, 2014 5:43 PM
Subject: [WSJT-SVN] WSJT r3619 - Asterix's ?
Hi Joe,
Good to see the averaging in JT4 now.
Question though, what is the meaning of the asterix's in the decode
window ?
From All.txt
170700 1 14/14 GB3CSB IO75XX 1 0
170800 9 -10 0.1 -46 7 * GB3CSB IO75XX 1***** A
170800 1 15/15 GB3CSB IO75XX 1 0
170900 0 -20 5.3 -50 4
170900 1 15/15 GB3CSB IO75XX 1 0
171000 9 -11 0.1 -53 7 * GB3CSB IO75XX 1***** A
171000 1 16/16 GB3CSB IO75XX 1 0
171100 0 -20 5.3 -57 7
171100 1 16/16 GB3CSB IO75XX 1 0
171200 9 -11 0.1 -59 7 * GB3CSB IO75XX 1***** A
171200 1 17/17 GB3CSB IO75XX 1 0
171300 0 -20 5.5 -63 7
73 David GM6BIG
------------------------------------------------------------------------------
_______________________________________________
wsjt-svn mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/wsjt-svn
_______________________________________________
wsjt-svn mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/wsjt-svn
_______________________________________________
Wsjt-devel mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/wsjt-devel
---
This email is free from viruses and malware because avast! Antivirus protection
is active.
http://www.avast.com
_______________________________________________
Wsjt-devel mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/wsjt-devel
