mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-10-31 15:47:10 -04:00
Updates to User Guide with a new QRA64C example.
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:
parent
05fdb9d3d0
commit
c03b837725
Binary file not shown.
Before Width: | Height: | Size: 131 KiB After Width: | Height: | Size: 92 KiB |
@ -155,17 +155,12 @@ image::JT65B.png[align="center",alt="JT65B"]
|
||||
=== QRA64
|
||||
|
||||
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,
|
||||
and some features of the decoder will almost surely change. In most
|
||||
ways you will find operation of QRA64 similar to JT65. The following
|
||||
screen shot shows examples of two QRA64A transmissions recorded over
|
||||
the EME path. The first (at 1554 UTC) shows G4SWX transmitting to
|
||||
K1JT at 144 MHz; the second shows VK7MO transmitting to G3WDG at 10
|
||||
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.
|
||||
_WSJT-X_. In most ways you will find operation of QRA64 similar to
|
||||
JT65. The following screen shot shows an example of a QRA64C
|
||||
transmission from DL7YC recorded at G3WDG over the EME path at 10 GHz,
|
||||
at a time when Doppler spread on the path was 82 Hz. The red curve
|
||||
with a peak at 967 Hz shows that the decoder has detected its
|
||||
synchronizing symbols, and the decode is successful.
|
||||
|
||||
image::QRA64.png[align="center",alt="QRA64"]
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user