RTTY Operation
To operate radio teletype (RTTY) with your KAM’98, first go to the command
prompt, then type RTTY, and the press return. This places the KAM’98 in the
RTTY mode. The baud rate of the transmitted data is controlled by the RBAUD
parameter. If you want to operate RTTY at a different speed, you may enter the
RTTY mode by giving the RTTY command and specifying the speed on the com
-
mand line (e.g., RTTY 75), then press return. When you enter the RTTY mode,
the KAM’98 sends the mode and speed indication to your terminal:
—RTTY 45—
The KAM’98 is now in the receive mode and will decode a properly tuned RTTY
signal, and will display the information on your terminal.
+ Note: IF AUTOSTRT is ON, received RTTY will not be displayed until the
KAM’98 receives the characters contained in your MYAUTOST parameter.
To transmit RTTY, type <Ctrl+C>T. This causes the KAM’98 to key your trans-
mitter, the bargraph in the KAM’98 goes dark, and the transmit LED light. Type
the message you wish to send and when you are through, type <Ctrl+C>E. The
KAM’98 will transmit your message and, when the data has been transmitted, re-
turn to the receive mode.
Use the <Ctrl+C>n directives listed below to change speeds while operating the
RTTY mode. To leave the RTTY mode and return to Command mode, type
<Ctrl+C>X.
RTTY Directives
While you are in RTTY mode, several directives are activated and perform the in
-
dicated functions:
<Ctrl+C>E Return to receive mode when the
transmit buffer is empty
<Ctrl+C>I Invert received MARK/SPACE signals and
invert transmitted MARK/SPACE if using
AFSK (SSB)
<Ctrl+C>L Send LETTERS shift character
<Ctrl+C>N Send FIGURES shift character
RTTY Operation Non-Packet Modes of Communication
KAM’98 v 8.3 139 User’s Guide
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