Icom IC-7100 Advanced Instructions - Page 78

The functions for RTTY operation, About RTTY reverse mode, Twin Peak Filter

Page 78 highlights

Previous view 4 RECEIVE AND TRANSMIT The functions for RTTY operation DDAbout RTTY reverse mode Received characters are occasionally garbled when the Mark and Space signals are reversed. This reversal can be caused by incorrect TNC connections, setting or commands. To correctly receive reversed RTTY signals, select the RTTY reverse mode. qqOn the Mode selection screen, touch "RTTY" to select the RTTY mode. wwAfter the RTTY mode is selected, touch "RTTY" again on the Mode selection screen, toggles between the normal and reverse modes. • "RTTY-R" appears when the RTTY reverse mode is selected. Left Display Center Right The L, R, C or D in the instructions indicate the part of the controller. L: Left side R: Right side C: Center bottom D: Display (Touch screen) Normal 170 Hz 2125 Hz Reverse 2125 Hz 170 Hz Space Mark BFO BFO Space Mark DDTwin Peak Filter The Twin Peak Filter changes the receive frequency response by boosting 2125 and 2295 Hz for better copying of RTTY signals. qqIn the RTTY mode, push MENU (C) one or more times to select the "M-2" screen (Menu M-2). wwTouch [RTTY](D) to display the "RTTY SET" screen. eeTouch the "Twin Peak Filter" item to select. rrTouch "ON" to turn ON the Twin Peak Filter. ttTouch [](D) or push MENU (C) to return to the "M-2" screen (Menu M-2). NOTE: When the Twin Peak Filter is in use, the received audio output may increase. This is normal; not a malfunction. Touch [RTTY] Touch "Twin Peak Filter" Touch "ON" 4-13

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4
RECEIVE AND TRANSMIT
4-13
The functions for RTTY operation
D
About RTTY reverse mode
Received characters are occasionally garbled when
the Mark and Space signals are reversed. This reversal
can be caused by incorrect TNC connections, setting
or commands.
To correctly receive reversed RTTY signals, select the
RTTY reverse mode.
On the Mode selection screen, touch “RTTY” to se-
q
lect the RTTY mode.
After the RTTY mode is selected, touch “RTTY” again
w
on the Mode selection screen, toggles between the
normal and reverse modes.
• “RTTY-R” appears when the RTTY reverse mode is se
-
lected.
D
Twin Peak Filter
The Twin Peak Filter changes the receive frequency re-
sponse by boosting 2125 and 2295 Hz for better copy-
ing of RTTY signals.
In the RTTY mode, push
q
MENU
(
C
) one or more
times to select the “M-2” screen (Menu M-2).
Touch [RTTY](
w
D
) to display the “RTTY SET”
screen.
Touch the “Twin Peak Filter” item to select.
e
Touch “ON” to turn ON the Twin Peak Filter.
r
Touch [
t
](
D
) or push
MENU
(
C
) to return to the
“M-2” screen (Menu M-2).
NOTE:
When the Twin Peak Filter is in use, the re-
ceived audio output may increase. This is normal;
not a malfunction.
Normal
Reverse
170 Hz
170 Hz
2125 Hz
2125 Hz
BFO
BFO
Space
Space
Mark
Mark
L
eft
R
ight
C
enter
D
isplay
The
L
,
R
,
C
or
D
in the
instructions indicate the
part of the controller.
L
: Left side
R
: Right side
C
: Center bottom
D
:
Display (Touch screen)
Touch [RTTY]
Touch “Twin
Peak Filter”
Touch “ON”