w4kek/WSJT-X
1
0
Fork 0
mirror of https://github.com/saitohirga/WSJT-X.git synced 2024-11-15 08:31:57 -05:00
Code Issues Packages Projects Releases Wiki Activity

Updates to User Guide with a new QRA64C example.

Browse Source 
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7332 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2016-11-22 17:48:59 +00:00
parent 05fdb9d3d0
commit c03b837725
2 changed files with 6 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

BIN
doc/user_guide/en/images/QRA64.png
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 131 KiB

After

Width:  |  Height:  |  Size: 92 KiB

17
doc/user_guide/en/vhf-features.adoc
View File

@ -155,17 +155,12 @@ image::JT65B.png[align="center",alt="JT65B"]
=== QRA64 === QRA64
QRA64 is an experimental mode in the Version 1.7 alpha release of QRA64 is an experimental mode in the Version 1.7 alpha release of
_WSJT-X_. Some details of the protocol are still subject to change, _WSJT-X_. In most ways you will find operation of QRA64 similar to
and some features of the decoder will almost surely change. In most JT65. The following screen shot shows an example of a QRA64C
ways you will find operation of QRA64 similar to JT65. The following transmission from DL7YC recorded at G3WDG over the EME path at 10 GHz,
screen shot shows examples of two QRA64A transmissions recorded over at a time when Doppler spread on the path was 82 Hz. The red curve
the EME path. The first (at 1554 UTC) shows G4SWX transmitting to with a peak at 967 Hz shows that the decoder has detected its
K1JT at 144 MHz; the second shows VK7MO transmitting to G3WDG at 10 synchronizing symbols, and the decode is successful.
GHz. Notice the small red curve plotted below frequency 1000 Hz in
the Wide Graph. Even though the VK7MO signal is hard to discern in
the waterfall, the red curve shows that the decoder has accurately and
reliably detected its synchronizing symbols, and the decode is
successful.
image::QRA64.png[align="center",alt="QRA64"] image::QRA64.png[align="center",alt="QRA64"]