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RTTY (FSK) operation
A DSP-based high-quality Baudot RTTY encoder/
decoder is built-in to the IC-7600. When connecting
a PC keyboard (pgs. 18, 19), RTTY operation can be
performed without an external RTTY terminal, TNC or
PC.
If you would rather use your RTTY terminal or TNC,
consult the manual that comes with the RTTY termi-
nal or TNC.
q Push a band key to select the desired band.
w Push [RTTY/PSK] to select RTTY.
After RTTY mode is selected, push and hold
[RTTY/PSK] for 1 sec. to toggle between RTTY and
RTTY-R modes.
“RTTY” or “RTTY-R” appears.
RTTY tuning indicator appears.
e Push [DECODE] (F-3) to display the decode
screen.
The IC-7600 has a built-in Baudot decoder.
r To tune the desired signal, aim for a symmetrical
waveform and ensure the peak points align with
the mark (2125 Hz) and shift (170 Hz) frequency
lines in the FFT scope.
The S-meter indicates received signal strength when
signal is received.
t Press [F12] on the connected PC’s keyboard to
transmit.
[TX] indicator lights red.
y Type from the keyboard to enter the contents that
you want to transmit.
The typewritten contents are indicated in the TX buffer
screen and transmitted immediately.
The text color will be changed when transmitted.
Press one of
[F1][F8]
on the keyboard to transmit the
TX memory contents.
u Press [F12] on the keyboard to return to receive.
For your convenience
The transmission contents can be typed before being
transmitted.
q Perform the steps q to r above.
w Type from the connected keyboard to enter the
message that you want to transmit.
The typewritten contents are indicated in the TX buffer
screen.
e Press [F12] of the connected keyboard to transmit
the typewritten contents.
The color of displayed text, in the TX buffer screen, will
be changed when transmitted.
To cancel the transmission, press [F12] tw
ice.
r Press [F12] of the keyboard to return to receive.
Main dial
EXIT/SET
F-3
[TX]
indicator
[RX]
indicator
Band keys
RTTY/PSK
DECODE
AppearsAppears
2125/170
1905 2515
FFT scope
TX buffer screen
TX/RX contents screen
Water-fall
46
4
RECEIVE AND TRANSMIT
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