S-COM 6K Owner's Manual page 44

At the end of a CW message, the Message Handler will change the frequency back to
normal. This allows you to create a special CW message with a unique pitch, and not worry
about changing the frequency back to normal to prevent affecting later messages.
If you wish to change the CW frequency for ALL CW messages, see the CW Frequency
Control Command.
F. Speed Change
The CW sending speed in WPM (words per minute) may be changed before, or during a
CW message. The speed may be varied from 5 WPM to 40 WPM in ten steps. This
feature allows you to draw attention to a certain CW message, or make it more easily
copies by those with modest CW skills.
To temporarily change the sending speed of a CW message, enter a 2-digit character from
60 to 69 ahead of the CW characters that are to be sent at the new speed.
The speed may be changed as often as desired within a CW message (even between each
character).
At the end of a CW message, the Message Handler will change the sending speed back to
normal. This allows you to create a special CW message with a unique speed, and not
worry about changing the speed back to normal to prevent affecting later messages.
If you wish to change the sending speed for ALL CW messages, see the CW Speed Select
Control Command. If you wish to allow users to slow down CW messages, see the Send
Next Message Slowly command.
G. Alphanumeric Characters
The controller features a library of 54 alphanumeric CW characters, consisting of the
numerals 0 through 9, the letters A through Z, punctuation and standard Morse
abbreviations. Each character is represented by a 2-digit code from 00 to 53. When
building a CW message, be sure to use both digits of the code (do not omit leading zeroes).
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6K V1.02 03-16-91