diff --git a/doc/user_guide/en/images/QRA64.png b/doc/user_guide/en/images/QRA64.png index 88d696b50..9e63abd0c 100644 Binary files a/doc/user_guide/en/images/QRA64.png and b/doc/user_guide/en/images/QRA64.png differ diff --git a/doc/user_guide/en/vhf-features.adoc b/doc/user_guide/en/vhf-features.adoc index 6deb2a8af..da791e740 100644 --- a/doc/user_guide/en/vhf-features.adoc +++ b/doc/user_guide/en/vhf-features.adoc @@ -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"]