Fsk Operation; D Connecting An Fsk Terminal Unit - Icom IC-M804 Instruction Manual

4
BASIC OPERATION

■ FSK operation

The transceiver has F1B (FSK) and J2B (AFSK)
modes for FSK operation. Select "F1B" when using
the built-in oscillator, and select "J2B" when using an
AFSK terminal unit.

D Connecting an FSK terminal unit

1. Connect an FSK terminal unit to the [AF/MOD]
socket, as shown to the right.
2. Select the channel to operate in the FSK mode.
L ITU FSK channel group, Ch 4001 to Ch 22026, are
usable only when the "ITU FSK CH" setting is set to
"ON." (p. 59)
3. Push [◄] or [►] until
Software Key area.
4. Push Mode
"J2B."
5. Operate using the FSK terminal unit.
NOTE:
• The FSK mark frequency, shift frequency, and
polarity can be selected in the FSK Settings.
(p. 59)
• Some transceivers may operate 1.7 kHz higher
than the IC-M804's J2B mode, even when the
same displayed frequencies are in use.
11
Mode is displayed in the
several times to select "F1B" or
FSK terminal unit connection
To pin 5
To pin 3 and 4
5 1
To pin 6
To pin 9
9
TX/RX control
AF ground
AF input
FSK keying
Ground
FSK terminal unit