Icom IC-756 - Manual (Page 61)

58
8
SET MODE
Tuner (PTT start)
Tuning of the internal antenna tuner can be started
automatically at the moment the PTT is pushed after
the operating frequency is changed (more than 1%
from last-tuned frequency).
O N O F F
Automatic PTT start
ON Automatic PTT start
OFF (default)
[ANT] switch
You can set the antenna connector selection to auto-
matic, manual or non-selection (when using 1 an-
tenna only).
When “AUTO” is selected, the antenna switch is acti-
vated and the band memory memorizes the selected
antenna. See p. 37 for details.
When “MANUAL” is selected, the antenna switch is
activated and selects an antenna manually.
When “OFF” is selected, the antenna switch is not ac-
tivated and does not function. The [ANT1] connector
is always selected in this case.
A U T O
M A N U A L
O F F
Antenna switch is activated and the
selection is automatically memorized.
(default)
Antenna switch is activated.
Antenna switch is deactivated and
[ANT1] is always selected.
RTTY mark freq.
This item selects the RTTY mark frequency. RTTY
mark frequency is toggled between 1275, 1615 and
2125 Hz.
■ Miscellaneous (others) set mode
(continued)
2 1 2 5 1 2 7 5
2125 Hz RTTY mark
frequency (default) 1275 Hz RTTY mark
frequency
RTTY shift width
This item adjusts the RTTY shift width. There are 3
selectable values: 170, 200 and 425 Hz.
1 7 0 4 2 5
170 Hz RTTY shift
frequency (default) 425 Hz RTTY shift
frequency
RTTY keying polarity
This item selects the RTTY keying polarity. Normal or
reverse keying polarity can be selected.
When reverse polarity is selected, Mark and Space
are reversed.
- Normal : Key open/close = Mark/Space
- Reverse : Key open/close = Space/Mark
N O R M A L R E V E R S E
Normal polarity (default) Reverse polarity