ICOM 217800 Manuale Utente
10
87
ANTENNA TUNER OPERATION
■
Automatic antenna selection
The transceiver covers 0.1–60 MHz over 10 bands.
Each band key has a band memory which can mem-
orize a selected antenna (ANT1, ANT2, ANT1/RX an-
tenna and ANT2/RX antenna). When you change the
operating frequency beyond a band, the previously
used antenna is automatically selected for the new
band. This function is convenient when you use 2 or 3
antennas.
Each band key has a band memory which can mem-
orize a selected antenna (ANT1, ANT2, ANT1/RX an-
tenna and ANT2/RX antenna). When you change the
operating frequency beyond a band, the previously
used antenna is automatically selected for the new
band. This function is convenient when you use 2 or 3
antennas.
To use the band memory, enter set mode and confirm
that “Auto” is selected as the [ANT] switch item.
(p. 100)
that “Auto” is selected as the [ANT] switch item.
(p. 100)
• When OFF is selected, the [ANT] switch does not function
and [ANT1] is always selected.
• When “Manual” is selected, the [ANT] switch functions,
however, band memory does not function. In this case,
you must select an antenna manually.
you must select an antenna manually.
• When “Auto” is selected (default setting), the antenna
tuner ON/OFF condition is also memorized in the band
memory.
memory.
• When “Auto” or “Manual” is selected, the antenna tuner
ON/OFF condition is consistent with the [ANT] switch.
• Antenna switch selection example
Under the following condition, “Auto” should be se-
lected as the [ANT] switch set mode item.
- When you use 2 antennas.
lected as the [ANT] switch set mode item.
- When you use 2 antennas.
Under the following conditions, “Manual” should be
selected as the [ANT] switch set mode item.
- When using 1 antenna.
- When using an external antenna selector for more
selected as the [ANT] switch set mode item.
- When using 1 antenna.
- When using an external antenna selector for more
than 3 antennas (except for receive antenna).
- When using an external antenna tuner.
DEF
DEF
WIDE
WIDE
é
è
VOX
VOX
OFF
OFF
OFF
COMP
COMP
OFF
OFF
WIDE
WIDE
AGC
AGC
MID
MID
MID
F M
F M S P L I T
S P L I T O f f s e t ( H F )
O f f s e t ( H F )
- 0 . 1 0 0 M H z
- 0 . 1 0 0 M H z
F M
F M S P L I T
S P L I T O f f s e t ( 5 0 M )
O f f s e t ( 5 0 M )
- 0 . 5 0 0 M H z
- 0 . 5 0 0 M H z
S P L I T
S P L I T L O C K
L O C K
O F F
O F F
T u n e r
T u n e r ( A u t o
( A u t o S t a r t )
S t a r t )
O F F
O F F
T u n e r
T u n e r ( P T T
( P T T S t a r t )
S t a r t )
O F F
O F F
[ A N T ]
[ A N T ] S w i t c h
S w i t c h
A u t o
A u t o
R T T Y
R T T Y M a r k F r e q u e n c y
M a r k F r e q u e n c y
2 1 2 5
2 1 2 5
O T H E R S
O T H E R S S E T
S E T