ICOM IC-7000 说明手册
53
4
RECEIVE AND TRANSMIT
D
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, settings, commands, etc.
the receive signal is reversed between MARK and
SPACE. This reversal can be caused by incorrect
TNC connections, settings, commands, etc.
To receive a reversed RTTY signal correctly, select
RTTY-R (RTTY reverse) mode.
RTTY-R (RTTY reverse) mode.
q Push
[MODE]
momentarily several times to select
RTTY mode.
w Push and hold
[MODE]
for 1 sec. to select RTTY or
RTTY-R mode.
Reverse
Normal
BFO
170
Hz
2125
Hz
170
Hz
2125
Hz
BFO
Mark
Space
displayed freq.
displayed freq.
Mark
Space
[MODE]
D
D
Twin peak filter
The twin peak filter changes the receive frequency re-
sponse by boosting 2 particular frequencies
sponse by boosting 2 particular frequencies
(2125 and
2295 Hz)
for better copying of desired RTTY signals.
q Push
[MODE]
momentarily to select RTTY mode.
• After RTTY mode is selected, push
[MODE]
for 1 sec.
to toggle between RTTY and RTTY-R modes.
w Push
[AF(
SET
)]
momentarily to enter the set mode
menu.
e Push
[F-1
Q
QS
S
]
to enter the quick set mode.
r Push
[F-1
≤
≤
]
or
[F-2
≥
≥
]
to select “T
Tw
wi
in
n
P
Pe
ea
ak
k
F
Fi
il
lt
te
er
r.”
t Rotate
[DIAL]
to select the twin peak filter function
ON or OFF.
• The received audio volume may become greater when
the twin peak filter is turned ON.
y Push
[
Z
Z
(
MENU
/
GRP
)]
twice to return the normal op-
erating mode.
[DIAL]
[MENU/GRP] [F-1] [F-2]
[AF]