Operating Rtty (Fsk) - Icom IC-7800 Instruction Manual

■ Operating RTTY (FSK)

[TX] indicator [RX] indicator
[AF] [F-3•DECODE] [RTTY/PSK]
Appears
TX buffer screen
FFT scope
RX contents screen
Water-fall
Band keys
Main dial
4-13
RECEIVE AND TRANSMIT
The Baudot RTTY encoder/decoder is built-in to the IC-
7800. When connecting a PC keyboard (p. 2-6), RTTY
operation can be performed without an external RTTY
terminal, TNC, etc.
When using your RTTY terminal or TNC, consult the
manual that comes with the RTTY terminal 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 [RTTY/PSK] for
1 sec. to toggle between RTTY and RTTY-R modes.
• "RTTY" or "RTTY-R" appears.
e Push [F-3•DECODE] to display the decoder screen.
• The IC-7800 has a Baudot decoder.
r To tune into the desired signal, make symmetrical
wave form and ensure the waves peak points align
with the mark (2125 Hz) and shift (170 Hz) fre-
quency lines in the FFT scope with the main dial.
• The S-meter indicates received signal strength when
signal is received.
t Rotate [AF] to set the audio to a comfortable listen-
ing level.
y Press [F12] of the connected keyboard to transmit.
• [TX] indicator lights red.
u Type from the connected keyboard to enter the con-
tents 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] to transmit the TX memory con-
tents.
i Press [F12] of the keyboard to return to receive.
✔ For your convenience
The transmission contents can be typewritten before
being transmitted.
q Perform the steps q to r above.
w Type from the connected keyboard to enter the con-
tents 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] twice.
r Press [F12] of the keyboard to return to receive.
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