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RTTY Operation
To operate RTTY mode with your KAM Plus, you must first have the Command prompt (cmd:).
Type RTTY and press return. This places the KAM Plus in the RTTY Mode and the baud rate of the
transmitted data is controlled by the RBAUD command. 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 command line (e.g. RTTY 75) and then press return. When you enter the RTTY Mode, the KAM
Plus sends the mode and speed indication to your terminal:
-RTTY 45-
The KAM Plus is now in the receive mode and will decode a properly tuned RTTY signal and display
the information on your terminal. NOTE: If AUTOSTRT is ON, received RTTY will not be displayed
until the KAM Plus receives the characters contained in your MYAUTOST parameter.
To transmit RTTY, type [Ctrl-C][T]. This causes the KAM Plus to key your transmitter, the bargraph
on the KAM Plus goes dark, and the HF transmit LED lights. Type the message you wish to send
and when you are through, type [Ctrl-C][E]. The KAM Plus will transmit your message and, when
the data has all been transmitted, returns 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 the RTTY mode, several directives are activated and perform the indicated func-
tions.
[Ctrl-C][E] Return to receive mode when 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
[Ctrl-C][R] Return to receive mode immediately (If the transmit buffer isn't empty the
remaining data will stay in the buffer)
[Ctrl-C][S] Select the next MARK/SPACE shift (170/425/850/MODEM)
[Ctrl-C][T] Enter transmit mode
[Ctrl-C][X] Exit RTTY mode and return to Command mode (PACKET)
[Ctrl-C][
n
] Change operating speed
n Speed (baud) n Speed
1 45 6 110
2 50 7 150
3 57 8 200
4 75 9 300
5 100 0 ASCBAUD
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