D About Rtty Reverse Mode; D Twin Peak Filter - Icom i9100 Instruction Manual

D About RTTY reverse mode

Received characters are occasionally garbled when
the Mark and Space signals are reversed. This rever-
sal can be caused by incorrect TNC connections, set-
ting or commands.
To receive reversed RTTY signals correctly, select the
RTTY reverse mode.
➥ In the RTTY mode, hold down [CW/RTTY] for 1 sec-
ond to select the RTTY reverse mode.
• "RTTY-R" appears when the RTTY reverse mode is se-
lected.
• Hold down [CW/RTTY] for 1 second again to select the
normal mode.

D Twin Peak Filter

The Twin Peak Filter changes the receive frequency
response by boosting 2125 and 2295 Hz for better
copying of RTTY signals.
q In the RTTY mode, push [MENU] to display the "M1"
screen (Menu 1).
w Push [RTTY](F-4) to display the "RTTY" screen.
e Push [TPF](F-4) to turn the Twin Peak Filter ON or
OFF.
r Push [MENU] to return to the previous display.
NOTE: When the Twin Peak Filter is in use, the re-
ceived audio output may increase. This is normal;
not a malfunction.
RECEIVE AND TRANSMIT
Normal
170 Hz 2125 Hz
Space BFO
Mark
RTTY
D E C
RTTY–TPF
RTTY
D E C
Appears when the Twin Peak
filter is turned ON.
4
Reverse
2125 Hz 170 Hz
BFO Space Mark
T P F S E T
Push
ON
T P F S E T
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
58