36
4
RECEIVE AND TRANSMIT
2001 NEW
■
RTTY functions
The transceiver has a number of convenient functions
for the RTTY operation that can be accessed from the
RTTY menu.
q
Push [CW/RTTY] to select RTTY mode.
w
Push [MENU] to select
M1
.
e
Push [F4
RTY
] to select the RTTY menu.
r
Push one of the multi-function keys ([F2], [F4] or
[F5]) to select an item in the RTTY menu. See the
diagram below.
• Push [MENU] to return to the previous indication.
D
D
IN RTTY MODE
F 1
F 2
F 3
F 4
F 5
F 1
F 2
F 3
F 4
F 5
F 1
F 2
F 3
F 4
F 5
F 1
F 2
F 3
F 4
F 5
F 1
F 2
F 3
F 4
F 5
F 1
F 2
F 3
F 4
F 5
A G C D U P 1 / 4 R T Y S C P
D E C F I L S E T
2 1 2 5
1
R T T Y M a r k
3 5 O
1
B a n d W i d t h
A D J
R T T Y - F I L O N
D E C F I L S E T
• RTTY menu
• RTTY decoder screen
(p. 38)
• RTTY filter set mode
(p. 37)
• RTTY set mode
(p. 39)
Push [F4]
Push
[F4] for
1 sec.
Switches RTTY filter ON and OFF.
Push
[F4]
Push
[F5]
Push [F2]
[MENU]
[CW/RTTY]
D
D
About RTTY reverse mode
Received characters are occasionally garbled when
the receive signal is reversed between MARK and
Space. This reversal can be caused by incorrect TNC
connections, setting, commands, etc. To receive re-
versed RTTY signals correctly, select RTTY-R mode.
➥
While RTTY mode is selected, push [CW/RTTY]
for 1 sec. to select the RTTY reverse mode.
• “RTTY-R” appears when the RTTY reverse mode is se-
lected.
• Push [CW/RTTY] for 1 sec. again to select the normal
RTTY mode.
Normal
Reverse
170 Hz
170 Hz
2125 Hz
2125 Hz
BFO
BFO
Space
Space
Mark
Mark
IC-7400.qxd 02.4.2 11:35 Page 36
