93
DATA COMMUNICATION
11
■ Packet (AFSK) operation
Before operating packet (AFSK), be sure to consult the
operating manual that came with your TNC.
q Connect the TNC and PC. (p. 92)
w Select the desired band. (p. 25)
e Push [SSB] or [AM/FM] to select the desired oper-
ating mode.
r Hold down the same key you pushed in step e for
1 second to select the Data mode.
t Rotate [DIAL] to select the desired frequency.
y Transmit your AFSK signals using your PC’s key-
board.
•Rotatethe[RFPWR]controltosettheoutputpower.
•WhileusingaTNC,therelativestrengthofthetransmit-
ted signal is indicated on the Po meter.
•WhenoperatingintheSSBdatamode,adjusttheout-
put power so that the ALC meter reading stays in the
ALC zone.
NOTE: When connecting the TNC to the ACC socket
on the rear panel, select the USB, LSB, AM and FM
data mode, or disconnect the microphone and ro-
tate the [MIC] control fully counterclockwise.
When the “DATA MOD” item is set to “ACC” (default)
in the Set mode, and the data mode is selected,
the audio input from the [MIC] connector is auto-
matically cut. In that case, the audio input from the
[ACC] socket is used.
Also, when the data mode is selected, the fixed set-
tings listed below are automatically selected;
•Speechcompressor :OFF
•Transmitbandwidth :MID
(Fixed to the default value;
300 Hz to 2700 Hz.)
•Txtone(Bass) :0
•Txtone(Treble) :0
• Example— LSB/LSB data mode
Mark freq.: 2125 Hz
Shift freq.: 200 Hz
2325 Hz
200 Hz 2125 Hz
Carrier point
(Displayed frequency)
When operating AFSK in the SSB mode, the displayed
frequency is the signal’s carrier point.
D Frequency display during AFSK operation
Appears when the data mode is selected.
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