D Rtty Decoder - Icom IC-746PRO Instruction Manual

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 M1.
e Push [F4 RTY] to select RTTY menu.
r Push [F4 FIL] to turn the RTTY filter ON.
• The RTTY decoder does not function when the RTTY fil-
ter is turned OFF.
t Push [F2 DEC] 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 at
above.
w Push [F1 ADJ] 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.
A number of indicating line, the UnShift On Space
(USOS) function and new line code can be set in
the RTTY set mode. (p. 39)
RECEIVE AND TRANSMIT
A G C D U P 1 / 4 R T Y S C P
F 1 F 2 F 3
Push [F4]
R T T Y - F I L O N
D E C
F 1 F 2 F 3
Push [F2]
A D J
F 1 F 2 F 3
Appears while the RTTY decoder screen is freezed
with [F2] operation.
Push [F3] to erase the displayed characters.
A D J
F 1 F 2 F 3
Push [F1]
å 9
F 1 F 2 F 3
Threshold level indication
4
F 4 F 5
F I L S E T
F 4 F 5
F 4 F 5
F 4 F 5
F 4 F 5
38