93
DATA COMMUNICATION
11
N0ACKET!&3+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.
s2OTATETHE;2&072=CONTROLTOSETTHEOUTPUTPOWER
s7HILEUSINGA4.#THERELATIVESTRENGTHOFTHETRANSMIT-
ted signal is indicated on the Po meter.
s7HENOPERATINGINTHE33"DATAMODEADJUSTTHEOUT-
put power so that the ALC meter reading stays in the
ALC zone.
./4% 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;
s3PEECHCOMPRESSOR /&&
s4RANSMITBANDWIDTH -)$
(Fixed to the default value;
300 Hz to 2700 Hz.)
s4XTONE"ASS
s4XTONE4REBLE
s%XAMPLELSB/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&REQUENCYDISPLAYDURING!&3+OPERATION
Appears when the data mode is selected.
[AM/FM] [DIAL][SSB]