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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.
DD
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
AGC
DUP
1/4
RTY
SCP
DEC
FIL
SET
21251
RTTY
Mark
35O1
Band
Width
ADJ
RTTY-FIL
ON
DEC
FIL
SET
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]
DD
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
BFOBFO
Space
Space
Mark
Mark
IC-7400.qxd 02.4.2 11:35 Page 36
49


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