Icom IC-756PROII Instruction Manual page 72

9
SET MODE
I Miscellaneous (others) set mode
The internal antenna tuner has an automatic start ca-
pability which starts tuning if the SWR is higher than
1.5–3:1.
When "OFF" is selected, the tuner remains OFF even
when the SWR is poor (1.5–3:1). When "ON" is se-
lected, automatic tune starts even when the tuner is
turned OFF.
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).
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. 46 for details.
When "Manual" is selected, the antenna switch is ac-
tivated 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.
This item selects the RTTY mark frequency. RTTY
mark frequency is switched between 1275, 1615 and
2125 Hz.
This item adjusts the RTTY shift width. There are 3
selectable values: 170, 200 and 425 Hz.
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
70
(continued)
Automatic tuner start
ON
Automatic PTT start
ON
Antenna switch is activated and the
selection is automatically memorized.
(default)
Antenna switch is activated.
Antenna switch is deactivated and
[ANT1] is always selected.
2125 Hz RTTY mark
frequency (default)
170 Hz RTTY shift
frequency (default)
Normal polarity (default)
Automatic tuner start
OFF (default)
Automatic PTT start
OFF (default)
1275 Hz RTTY mark
frequency
425 Hz RTTY shift
frequency
Reverse polarity