![background image](http://html.mh-extra.com/html/icom/ic-7400/ic-7400_instruction-manual_612264052.webp)
39
4
RECEIVE AND TRANSMIT
2001 NEW
2001 NEW
D
D
RTTY set mode
This set mode is used to set the mark and shift fre-
quencies, keying type, decode USOS function, etc.
• Setting contents
q
Push [MENU] to select
M1
, then push [F4
RTY
] to
select the RTTY menu.
w
Push [F5
SET
] to select RTTY set mode.
e
Push [F1
≤
] or [F2
≥
] to select the desired set item.
r
Set the desired condition using the tuning dial.
• Push [F3] for 1 sec. to select a default condition or value.
t
Push [MENU] 2 times to return to
M1
.
F 1
F 2
F 3
F 4
F 5
2 1 2 5
1
R T T Y M a r k
Set item up/down
1.
RTTY Mark
Sets the mark frequency for RTTY operation.
• 1275, 1615 and 2125 Hz are selectable.
2 1 2 5
1
R T T Y M a r k
2.
RTTY Shift
Sets the shift frequency for RTTY operation.
• 170, 200 and 425 Hz are selectable.
1 7 O
2
R T T Y S h i f t
3.
RTTY Keying
Selects the keying polarity from normal and reverse.
NORMAL
Key open/close = Mark/Space
REVERSE
Key open/close = Space/Mark
N O R M A L
3
R T T Y K e y i n g
4.
Decode USOS
Turn the USOS
(UnShift On Space)
function ON/OFF
ON
Decode as letter code
OFF
Decode as character code
O N
4
D e c o d e U S O S
5.
Decode New Line
Selects the new line code of the internal RTTY decoder.
CR: Carriage Return; LF: Line Feed
CR,LF,CR+LF
CR, LF and CR+LF
CR+LF
CR+LF only
C R , L F , C R + L F
5
D e c o d e N e w L i n e
6.
Decode Screen
Selects the number of the decoder indication from 2
or 3 lines.
3 l i n e
6
D e c o d e S c r e e n
IC-7400.qxd 02.4.2 11:35 Page 39