kopia lustrzana https://github.com/jamescoxon/dl-fldigi
130 wiersze
4.2 KiB
Plaintext
130 wiersze
4.2 KiB
Plaintext
/**
|
|
\page cw_page CW
|
|
|
|
\tableofcontents
|
|
|
|
\section cw_freq Carrier Frequency
|
|
|
|
Fldigi generates CW by inserting a keyed tone at the current
|
|
waterfall audio frequency. The CW carrier frequency is the USB
|
|
carrier + the audio frequency, or the LSB carrier -
|
|
the audio frequency. If fldigi is tracking and receiving a CW
|
|
signal on the waterfall your transmitted signal will be exactly on the
|
|
frequency of the other operator. You probably cannot use your
|
|
transceivers CW filter unless that filter can be used with the SSB mode.<br>
|
|
<br>
|
|
|
|
\section qsk_tab_key QSK and the TAB KEY
|
|
|
|
If you are operating QSK with a separate transmitter / receiver you can
|
|
very quickly stop your transmit signal with the TAB key. In
|
|
the CW mode only the TAB key causes the program to skip over the remaining
|
|
text in the transmit text buffer. The text that is skipped will
|
|
be color coded blue. The program remains in the transmit mode
|
|
(PTT enabled), but since the buffer is now empty no A2 CW signal is
|
|
generated. Code transmission will then restart with the very
|
|
next keyboard closure of a valid CW character.
|
|
<br>
|
|
|
|
\section pause_transmit Pausing transmit
|
|
|
|
The Pause/Break momentarily key stops sending text. Pressing it again
|
|
resumes transmission.
|
|
<br>
|
|
|
|
\section abort_transmit Aborting transmit
|
|
|
|
The Escape key is used to immediately stop text transmission. The Tx buffer
|
|
is cleared.
|
|
<br>
|
|
|
|
\section wpm_adjustements WPM adjustment
|
|
|
|
In CW mode the status bar is changed to include a transmit WPM adjuster. Use
|
|
the arrow buttons or the mouse. Mouse wheel up/down changes transmit WPM
|
|
by +/- 1. Hold the shift and mouse mouse wheel changes transmit WPM
|
|
by +/- 10. The "*" button immediately to the right of the WPM adjuster is
|
|
used to toggle between the current and the default transmit WPM.
|
|
<br>
|
|
|
|
The transmit WPM can also be adjusted with three hot keys:
|
|
<br>
|
|
|
|
<ul>
|
|
<li>Numeric keypad "+" increases the transmit WPM by 1</li>
|
|
<li>Numeric keypad "-" decreases the transmit WPM by 1</li>
|
|
<li>Numeric keypad "*" toggles between the selected transmit WPM and the
|
|
default transmit WPM</li>
|
|
</ul>
|
|
|
|
The "Default" control on the CW tab sets that default value. If during a
|
|
QSO you needed to slow down to give the other op a better chance to
|
|
copy what you are sending, just hit the "*" on the numeric keypad and
|
|
the CW code will immediately switch to sending CW at the set default
|
|
value (18 wpm in this example). Press the "*" again to return to
|
|
back to the CW speed that you were previously using.
|
|
<br>
|
|
|
|
Each time the transmit WPM is changed the receive decoder WPM tracking
|
|
is reset to the new transmit WPM. This allows you to quickly
|
|
force the decoder to a new WPM range.
|
|
<br>
|
|
|
|
\image html cw_status_1.png "The Rx and Tx WPM are shown in the status bar."
|
|
\image latex cw_status_1.png "The Rx and Tx WPM are shown in the status bar." width=2.2in
|
|
|
|
<br>
|
|
|
|
\image html cw_status_2.png "* indicates that default WPM is selected"
|
|
\image latex cw_status_2.png "* indicates that default WPM is selected" width=3.0in
|
|
|
|
\section sec_farnsworth Farnsworth keying
|
|
|
|
You might want to use farnsworth keying to provide a character rate that is
|
|
faster than the word per minute rate.<br>
|
|
|
|
\image html farnsworth.png "Farnworth Timing"
|
|
\image latex farnsworth.png "Farnworth Timing" width=5.0in
|
|
<br>
|
|
|
|
Set the F-WPM slider to tthe character rate and enable the Use
|
|
Farnsworth timing check box. When the TX WPM is set to a speed
|
|
below the Farnsworth value then the character rate will be at the
|
|
Farnsworth setting and the word rate will be at the TX WPM rate.
|
|
You can also set the TX WPM and F-WPM from within a \ref macro_page.
|
|
<br>
|
|
|
|
\section cw_config CW configuration
|
|
|
|
The \ref cw_configuration_page is easily reached from the Config menu or
|
|
by right clicking on the left most entry in the status bar (CW).
|
|
<br>
|
|
|
|
\section sub_prosigns Prosigns
|
|
|
|
The prosigns are configurable \(see \ref cw_configuration_page \). The
|
|
defaults are:
|
|
<br>
|
|
|
|
PROSIGN | KEYBOARD | DISPLAYED AS
|
|
:------: | :-------: | :--------:
|
|
BT | = | \<BT\>
|
|
AA | ~ | \<AA\>
|
|
AR | > | \<AR\>
|
|
AS | < | \<AS\>
|
|
HM | { | \<HM\>
|
|
INT | & | \<INT\>
|
|
SK | % | \<SK\>
|
|
KN | + | \<KN\>
|
|
VE | } | \<VE\>
|
|
|
|
|
|
|
|
<br>
|
|
\ref cw_page "Return to Top of Page"
|
|
<br>
|
|
\ref main_page "Return to Main Page"
|
|
|
|
|
|
*/
|