Edits to User Guide section 6.

This commit is contained in:
Steven Franke 2021-07-28 08:20:30 -05:00
parent 6a2c8d487e
commit 371e9e2365
4 changed files with 31 additions and 20 deletions

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@ -39,7 +39,7 @@ image::RadioTab.png[align="center",alt="Radio Tab"]
+ +
NOTE: A special value of *USB* is available for custom USB devices NOTE: A special value of *USB* is available for custom USB devices
like those used by some SDR kits. This is not the same a virtual like those used by some SDR kits. This is not the same as the virtual
serial port provided by USB connected transceivers and CAT serial port provided by USB connected transceivers and CAT
interfaces, for those use the COM or serial port name that interfaces, for those use the COM or serial port name that
refers to them. refers to them.

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@ -4,7 +4,8 @@
=== Download Samples === Download Samples
The following steps will download sample audio Wave files that were originally recorded The following steps will download sample audio Wave files that were originally recorded
by WSJT-X. These files can be read in to simulate realtime operation. by WSJT-X. These files can be read in and processed by WSJT-X to simulate realtime
operation.
- Select *Download samples...* from the *Help* menu. - Select *Download samples...* from the *Help* menu.

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@ -8,7 +8,7 @@
- Select *File | Open* and navigate to - Select *File | Open* and navigate to
+...\save\samples\FT8\210703_133430.wav+. The waterfall and Band +...\save\samples\FT8\210703_133430.wav+. The waterfall and Band
Activity window should look something like the following screen shots: Activity/Rx Frequency windows should look something like the following screen shots:
- You may want to pretend you are K1JT - You may want to pretend you are K1JT
by entering that callsign temporarily as *My Call* on the by entering that callsign temporarily as *My Call* on the
@ -25,22 +25,21 @@ image::ft8_decodes.png[align="left"]
.Decoding Overview .Decoding Overview
Decoding takes place at the end of a receive sequence. With *Decode* set Decoding takes place at the end of a receive sequence. With *Decode* set
to *Deep*, three decoding passes will be done. The *Decode* button on the to *Deep*, three decoding passes will be done and the *Decode* button on the
mainwindow will illuminate three times, once for each pass. mainwindow will illuminate three times, once for each pass.
The first decoding attempt in each decoding pass is done at the selected Rx frequency, The first decoding attempt in each decoding pass is done at the selected Rx frequency,
indicated by the U-shaped green marker on the waterfall frequency indicated by the U-shaped green marker on the waterfall frequency
scale. Results appear in both the left (*Band Activity*) and right scale. All decodes appear in the left (*Band Activity*) window. The right
(*Rx Frequency*) text windows on the main screen. The program then (*Rx Frequency*) text window displays any decodes obtained at the current
finds and decodes all signals in the selected mode over the displayed Rx frequency along with any decodes addressed to *My Call* (K1JT in this case).
frequency range. The red marker on the waterfall scale indicates your The red marker on the waterfall scale indicates your
Tx frequency. Tx frequency.
Twenty one FT8 signals are decoded from the example file. The number Twenty one FT8 signals are decoded from the example file. The number
of decodes is shown at the bottom of the main window. of decodes is shown in a box at the bottom of the main window.
When this file was recorded HA5WA was finishing a QSO with K1JT and When this file was recorded HA5WA was finishing a QSO with K1JT, and
his 73 message is shown in red because it is addressed to *My Call* (in this case K1JT). his 73 message is shown in red because it is addressed to *My Call* (in this case K1JT).
The *Band Activity* window shows this message along with By default, lines containing `CQ`
all decodes at other frequencies. By default, lines containing `CQ`
are highlighted in green, and lines with *My Call* (K1JT) are highlighted in green, and lines with *My Call* (K1JT)
in red. Notice that K1JT has two callers; HA0DU and EA3AGB. in red. Notice that K1JT has two callers; HA0DU and EA3AGB.
@ -52,10 +51,10 @@ try double-clicking with the mouse on the decoded text lines and on the
waterfall spectral display. You should be able to confirm the waterfall spectral display. You should be able to confirm the
following behavior: following behavior:
- Double-click on one of the decoded lines highlighted in - Double-click on one of the decoded *CQ* messages highlighted in
green. These actions produce the following results: green. These actions produce the following results:
** Callsign and locator of a station calling CQ are copied to the *DX ** Callsign and locator of the station calling CQ are copied to the *DX
Call* and *DX Grid* entry fields. Call* and *DX Grid* entry fields.
** Messages are generated for a standard minimal QSO. ** Messages are generated for a standard minimal QSO.

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@ -1,8 +1,14 @@
// Status=review // Status=review
Set up the Wide Graph (also called the Waterfall). The WSJT-X Wide Graph window displays the frequency spectrum of the received audio. Usually, the
upper portion of the window shows a waterfall plot of the frequency spectrum (a spectrogram) and
a line plot of the current or average spectrum. Controls at the bottom of the window are used to
set up the displayed audio frequency range, color palette, and scaling of the spectrum displays.
A control on the bottom right of the Wide Graph (displayed as *Spec nn%*) allows the user to control
the vertical fraction of the window that is occupied by the spectrum line plot.
It is important to set appropriate lower and upper It is important to set appropriate lower and upper
audio frequency limits for the Wide Graph because these limits define the FT8 decoder's search window: audio frequency limits for the Wide Graph because these limits define the FT8 decoder's search window.
For this tutorial, the limits will be set to cover 100-3300 Hz:
- Set *Start* = 100 Hz. - Set *Start* = 100 Hz.
- Set *Bins/Pixel* = 5. Smaller/larger values make the Wide Graph cover a smaller/larger - Set *Bins/Pixel* = 5. Smaller/larger values make the Wide Graph cover a smaller/larger
@ -25,11 +31,16 @@ When *Flatten* is checked, WSJT-X attempts to correct for rolloff at the lowest
frequencies in the spectrum: frequencies in the spectrum:
- *Flatten* = checked - *Flatten* = checked
The line plot can be set up to display the current (un-averaged) spectrum or the cumulative (averaged)
spectrum:
- Select *Cumulative* for data display - Select *Cumulative* for data display
- Set the *Gain* and *Zero* sliders for the waterfall and spectrum to near midscale - Set the *Gain* and *Zero* sliders for the waterfall and spectrum to near midscale
The *Spec* setting determines what fraction of the vertical extent of the Wide Graph will The *Spec nn%* setting determines what fraction of the vertical extent of the Wide Graph will
be used for the line plot of the spectrum. Setting *Spec* to 0 will eliminate the line plot. be used for the line plot of the spectrum. Setting *Spec* to 0 will eliminate the line plot and
a setting of 100 will eliminate the spectrogram and show only the line plot:
- Set *Spec* = 25% - Set *Spec* = 50%