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DATA COMMUNICATION
Before operating packet (AFSK) be sure to consult
the operating manual that came with your TNC.
q
Connect a TNC and PC as left page.
w
Push
[
(
Y
)
BAND]/[
(
Z
)
BAND] to select the desired
band
.
e
P
ush [MODE] momentarily to select SSB (LSB)
mode (or select SSB-D mode).
• After USB mode is selected, push [MODE] for 1 sec.
to toggle between USB and LSB modes.
• After RTTY mode is selected, push [MODE] for 1 sec.
to toggle between RTTY and SSB-D modes.
• Generally, LSB is used on the HF bands and FM is
used for the 50 MHz band.
r
Rotate [AF] to set audio to a comfortable listening
level.
t
Rotate the main dial to tune a desired signal.
• S-meter indicates received signal strength.
y
Transmit your AFSK signals using your computer’s
keyboard.
• The TX indicator lights red.
NOTE:
When connecting a TNC to the ACC socket
on the rear panel, select SSB-D mode or discon-
nect the microphone and adjust ‘MIC GAIN’ to 0 in
quick set mode.
When SSB-D mode is selected, the audio input
from the [MIC] connector is automatically cut, and
the audio input from the [ACC] is used.
R
LSB
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
USB
CW
RTTY AM WFM
M4 1/4
TON
AGC
[TX] indicator [MODE] Main dial
[AF]
[
Y
]
[
Z
]
“USB” or “LSB” blinks when
SSB-D mode is selected.
■
Packet (AFSK) operation
When operating AFSK in SSB mode, the indicated
frequency is the signals carrier point.
• Example—
SSB-D mode
Mark freq.: 2125 Hz
Shift freq.: 200 Hz
2325 Hz
200 Hz
2125 Hz
Carrier point
(Displayed frequency)
D
Frequency indication during AFSK operation
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