ICOM IC-756PRO2 Manuale Utente
79
11
MAINTENANCE
■
Tuning dial brake adjustment
The tension of the tuning dial may be adjusted to suit
your preference.
your preference.
The brake adjustment screw is located on the right
side of the tuning dial. See the figure at right.
side of the tuning dial. See the figure at right.
Turn the brake adjustment screw clockwise or coun-
terclockwise to obtain a comfortable tension level
while turning the dial continuously and evenly in one
direction.
terclockwise to obtain a comfortable tension level
while turning the dial continuously and evenly in one
direction.
Light
Heavy
■
Frequency calibration
(approximate)
A very accurate frequency counter is required to cali-
brate the frequency of the transceiver. However, a
rough check may be performed by receiving radio
station WWV, or other standard frequency signals.
brate the frequency of the transceiver. However, a
rough check may be performed by receiving radio
station WWV, or other standard frequency signals.
CAUTION:
Your transceiver has been thor-
oughly adjusted and checked at the factory before
being shipped. You should not calibrate frequen-
cies, except for special reasons.
being shipped. You should not calibrate frequen-
cies, except for special reasons.
q
Push [SSB] to select USB mode.
w
Push [PBT CLR] for 1 sec. to clear the PBT set-
tings and make sure that the RIT/
tings and make sure that the RIT/
∂
TX function is
not activated.
e
Set the frequency to the standard frequency sta-
tion minus 1 kHz.
tion minus 1 kHz.
• When receiving WWV (10.000.00 MHz) as a standard
frequency, set the operating frequency for
9.999.00 MHz.
9.999.00 MHz.
• Other standard frequencies can also be used.
r
Push [EXIT/SET] several times to close a multi-
function screen, if necessary.
function screen, if necessary.
t
Push [EXIT/SET] for 1 sec. to select the set mode
screen.
screen.
y
Push [(F-5)OTHERS] to enter miscellaneous (oth-
ers) set mode.
ers) set mode.
u
Push [(F-1)
Y
] several times to select the “Calibra-
tion marker” item.
i
Rotate the tuning dial clockwise to turn the calibra-
tion marker ON.
tion marker ON.
• Side tone may be heard.
o
Adjust the calibration pot on the right side panel of
the transceiver for a zero beat with the received
standard signal as shown below.
the transceiver for a zero beat with the received
standard signal as shown below.
• Zero beat means that two signals are exactly the same
frequency, resulting in a single tone being emitted.
!0
Rotate the tuning dial counterclockwise to turn the
calibration marker OFF.
calibration marker OFF.
!1
Push [EXIT/SET] twice to exit set mode.
DEF
DEF
WIDE
WIDE
é
è
AGC
AGC
MID
MID
MID
BK-IN
BK-IN
OFF
OFF
1/4
1/4
OFF
OFF
OFF
C a l i b r a t i o n
C a l i b r a t i o n M a r k e r
M a r k e r
O N
O N
B e e p ( C o n f i r m a t i o n )
B e e p ( C o n f i r m a t i o n )
O N
O N
B e e p ( B a n d
B e e p ( B a n d E d g e )
E d g e )
O N
O N
R F / S Q L
R F / S Q L C o n t r o l
C o n t r o l
R F + S Q L
R F + S Q L
Q u i c k
Q u i c k D u a l w a t c h
D u a l w a t c h
O N
O N
Q u i c k
Q u i c k S P R I T
S P R I T
O N
O N
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
O T H E R S
O T H E R S S E T
S E T
SFT
SFT
0
FIL2
FIL2
U S B
U S B
qw:pp
TX
TX
USB
USB
o.ooo.pp
14.100.00
14.100.00
1
VFO
VFO
BW
BW
2.4k
2.4k
ANT
ANT
1
METER
METER
Po
Po