MORSE(6)
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morse -- reformat input as morse code
morse [-elps] [-d device] [-w speed] [-f frequency] [string ...]
The morse command reads the given input and reformats it in the form of
morse code. Acceptable input are command line arguments or the standard
input.
Available options:
-l The -l option produces output suitable for led(4) devices.
-s The -s option produces dots and dashes rather than words.
-p Send morse the real way. This only works if your system has
speaker(4) support.
-w speed
Set the sending speed in words per minute. If not specified, the
default speed of 20 WPM is used.
-f frequency
Set the sidetone frequency to something other than the default
600 Hz.
-d device
Similar to -p, but use the RTS line of device (which must by a
TTY device) in order to emit the morse code.
-e Echo each character before it is sent, used together with either
-p or -d.
The -w and -f flags only work in conjunction with either the -p or the -d
flag.
Not all prosigns have corresponding characters. Use `#' for AS, `&' for
SK, `*' for VE and `%' for BK. The more common prosigns are `=' for BT,
`(' for KN and `+' for AR.
Using the -d flag, it is possible to key an external device, like a
sidetone generator with a headset for training purposes, or even your ham
radio transceiver. For the latter, simply connect an NPN transistor to
the serial port device, emitter connected to ground, base connected
through a resistor (few kiloohms) to RTS, collector to the key line of
your transceiver (assuming the transceiver has a positive key supply
voltage and is keyed by grounding the key input line). A capacitor (some
nanofarads) between base and ground is advisable to keep stray RF away,
and to suppress the minor glitch that is generated during program
startup.
/dev/speaker speaker device file
Your LC_CTYPE locale codeset determines how characters with the high-
order bit set are interpreted.
ISO8859-1
ISO8859-15 Interpret characters with the high-order bit set as Western
European characters.
KOI8-R Interpret characters with the high-order bit set as Cyrillic
characters.
ISO8859-7 Interpret characters with the high-order bit set as Greek
characters.
speaker(4)
Sound support for morse added by Lyndon Nerenberg (VE7TCP/VE6BBM)
<lyndon@orthanc.com>.
Ability to key an external device added by Jorg Wunsch (DL8DTL).
Only understands a few European characters (German and French), no Asian
characters, and no continental landline code.
Sends a bit slower than it should due to system overhead. Some people
would call this a feature.