Data Mode (Afsk) Operation - Icom IC-7600 Instruction Manual

Data mode (AFSK) operation

When operating AMTOR or PACKET with your TNC
and/or PC software, consult the manual that comes
with the TNC and/or the software.
q Connect a PC and TNC to the transceiver. (p. 22)
w Push a band key to select the desired band.
e Push [SSB] or [AM/FM] to select the desired oper-
ating mode.
r Push and hold [SSB] or [AM/FM] that is pushed in
step e for 1 sec. to turn data mode ON.
• One of "-D1," "-D2" or "-D3" is additionally appears.
• During data mode selection, push and hold [SSB] or
[AM/FM] for 1 sec. to select data mode 1 (D1), 2 (D2)
and 3 (D3) in sequence.
t Rotate the main dial to tune to the desired signal
and decode it correctly.
• Also use the tuning indicator of the TNC or software.
• During SSB data mode, the
used for critical tuning.
y Operate the PC (software) or TNC to transmit.
• When operating in SSB data mode, adjust the TNC
output level so that the ALC meter reading doesn't go
outside the ALC zone.
NOTE: When data mode is selected, the audio
input from the [ACC1] (pin 4) is used for transmis-
sion instead of [MIC]'s depending on the set mode
settings. Modulation input connector can be
changed in ACC set mode (p. 124)
The fixed condition is used for SSB data transmis-
sion as follows:
• [COMP]
• Tx bandwidth
• Tx Tone (Bass)
• Tx Tone (Trebles) : 0
* Fixed to the default value (lower: 300, higher:
2700). (p. 122)
For your information
Carrier frequency is displayed when SSB data mode
is selected.
See the diagram at right for the tone-pair example.
1 ⁄ tuning function can be
4
: OFF
: MID*
: 0
RECEIVE AND TRANSMIT
SSB
Appears
• Tone-pair example
2325 Hz
200 Hz
4
Band keys
Main dial
AM/FM
2125 Hz
Carrier frequency
(displayed frequency)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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