I Packet (Afsk) Operation; D Frequency Indication During Afsk Operation - Icom IC-703 Instruction Manual

I Packet (AFSK) operation

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
[ BAND]/[ BAND] to select the desired
(Y) (Z)
band.
e Push [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.

D Frequency indication during AFSK operation

When operating AFSK in SSB mode, the indicated
frequency is the signals carrier point.
DATA COMMUNICATION
[AF] [TX] indicator [MODE] Main dial
"USB" or "LSB" blinks when
SSB-D mode is selected.
LSB USB CW R RTTY AM WFM
S1 3 5 7 9 20 40
P 5
O
• Example— SSB-D mode
Mark freq.: 2125 Hz
Shift freq.: 200 Hz
2325 Hz
200 Hz
10
[Y]
[Z]
60dB VFO A
CH
10
2125 Hz
Carrier point
(Displayed frequency)
10
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