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7K
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Chapter 4
4-6
CW Messages
Control Character
When building a CW Message , the control character 9900 should be entered
before the actual CW characters. If a message does not begin with a control
character, the message handler will assume that the message should be sent
in CW. Therefore, a CW-only message would not require the 9900. A message
could be made up of mixed types, such as a series of beeps followed by CW
characters. In that case, the control character 9900 is needed before the CW
portion of the message.
Format
The format for CW messages is as follows:
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Enter the control character 9900.
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Enter the various CW character codes described in the CW Character Set
Tables which begin on page A-2 to create the desired message.
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You may end the CW message with the (*) character, or enter another
control character (99xx) and continue with another message type.
Pre-Message Delay Character
A special Pre-Message Delay Character , 54, can be programmed after the
control character 9900, but before the CW characters. The delay character (54)
causes the message handler to pause for 1 second before sending the CW
message. Any additional 54s found after the first one will be ignored. If the CW
message was preceded by any other message, the 54 will be ignored.
Wordspace Character
The Wordspace Character , 40, should be placed between the words in a CW
message. The message handler will automatically place a wordspace at the
end of a CW message, so you won't have to remember to do so. This feature
prevents two adjacent CW messages from being run together. Wordspace
characters can be used as pauses during a CW message. However, the length
of the pause will depend upon the current sending speed of the CW (words-
per-minute).
Frequency Change
The CW frequency (pitch) may be changed before—or during—a CW
message. This feature allows you to draw attention to a certain message (or
part of a message).
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A 6-digit character, 59xxxx, should be entered ahead of the CW characters
that are to be sent at the new frequency.
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The four digits following the 59, shown as “xxxx,” represent the new
frequency and are taken from the Tone Code Table on page A-20.
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The frequency may be changed as often as desired within a CW message
(even between each character).
The temporary frequency will stay in effect until either changed by other control
codes, or until the message buffer empties. Thus, if you will be using the