Icom IC-746PRO Instruction Manual page 51

D D RTTY decoder
The transceiver has an RTTY decoder for Baudot
(mark freq.: 2125 Hz, shift freq.: 170 Hz, 45 bps).
An external terminal unit (TU) or terminal node con-
nector (TNC) is not necessary for receiving a Baudot
signal.
q Push [CW/RTTY] to select RTTY mode.
• After RTTY mode is selected, push [CW/RTTY] for 1 sec.
to select RTTY-R mode.
w Push [MENU] several times to select
e Push [F4
] to select RTTY menu.
r Push [F4
] to turn the RTTY filter ON.
• The RTTY decoder does not function when the RTTY fil-
ter is turned OFF.
t Push [F2
] to turn the RTTY decoder ON.
• RTTY decoder screen appears.
y Push [F2] to freeze the current screen.
• "H" appears while the function is in use.
u Push [F3] for 1 sec. to clear the displayed charac-
ters.
i Push [MENU] to exit the RTTY decoder screen.
• Setting the decoder threshold level
Adjust the RTTY decoder threshold level if some char-
acters are displayed when no signal is received.
q Call up the RTTY decoder screen as described
above.
w Push [F1
] to select the threshold level setting
condition.
e Rotate the tuning dial to adjust the RTTY decoder
threshold level.
• Push [F3] for 1 sec. to select the default condition.
r Push [MENU] to exit the RTTY decoder screen.
The number of line of text can be selected from 2 or
3 in the display. The UnShift On Space (USOS)
function and new line code can be set in the RTTY
set mode. (p. 39)
.
F 1
F 1
Push [F2]
F 1
Appears while the RTTY decoder screen is freezed
with [F2] operation.
Push [F3] to erase the displayed characters.
F 1
F 1
Threshold level indication
RECEIVE AND TRANSMIT
F 2 F 3 F 4
Push [F4]
F 2 F 3 F 4
F 2 F 3 F 4
F 2 F 3 F 4
Push [F1]
F 2 F 3 F 4
4
F 5
F 5
F 5
F 5
F 5
38