Manual Icom IC-756 (page 106 of 124) (English)

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101

SET MODE

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Miscellaneous (others) set mode (continued)

RRTTTTYY MMaarrkk FFrreeqquueennccyy

This item selects the RTTY mark frequency. RTTY

mark frequency is switched between 1275, 1615 and

2125 Hz.

22112255

2125 Hz RTTY mark

frequency (default)

11227755

1275 Hz RTTY mark

frequency

RRTTTTYY SShhiifftt WWiiddtthh

This item adjusts the RTTY shift width. There are 3

selectable values: 170, 200 and 425 Hz.

117700

170 Hz RTTY shift

frequency (default)

442255

425 Hz RTTY shift

frequency

RRTTTTYY KKeeyyiinngg PPoollaarriittyy

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

NNoorrmmaall

Normal polarity (default)

RReevveerrssee

Reverse polarity

[[AANNTT]] SSwwiittcchh

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. 88 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.

AAuuttoo

Antenna switch is activated and the

selection is automatically memorized.

(default)

MMaannuuaall

Antenna switch is activated.

OOFFFF

Antenna switch is deactivated and

[ANT1] is always selected.

TTuunneerr ((AAuuttoo SSttaarrtt))

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.

OONN

Automatic tuner start

OOFFFF

Automatic tuner start

OFF (default)

TTuunneerr ((PPTTTT SSttaarrtt))

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).

OONN

Automatic PTT start

OOFFFF

Automatic PTT start

OFF (default)

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Icom IC-756 Manual

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