Справочник Пользователя для ICOM iC-706MKTMG
38
4
RECEIVE AND TRANSMIT
The IC-706MKIIG can measure SWR in 2 ways:
(A) Spot measurement; or (B) Plot measurement.
(A) Spot measurement; or (B) Plot measurement.
(A) Spot measurement
➀
Confirm that the output power is over 30 W.
➁
Push [MENU] one or more times to select
M3
.
➂
Push [
(F3)
MET
] to select the SWR meter.
➃
Push [MODE] one or more times to select CW or
RTTY operation.
RTTY operation.
• Key down or push [PTT] to transmit; then read the actu-
al SWR from the meter:
➠
≤
1.5 well matched antenna
➠
>
1.5 check antenna or cable connection, etc.
(B) Plot measurement
Plot measurement allows you to measure the SWR
over an entire band.
Plot measurement allows you to measure the SWR
over an entire band.
q
Confirm that the output power is over 30 W.
w
Push [DISPLAY] twice to select
G1
.
e
Push [MENU] to select
G2
.
r
Set the center frequency for the SWR to be mea-
sured.
sured.
t
Push and hold [
(F1)
10k
] one or more times to
select the desired frequency pitch.
y
Push and hold [
(F2)
] one or more times to select
the desired step.
u
After selecting the desired pitch and step, push
[
[
(F3)
STR
] to measure the SWR.
i
Push and hold [PTT] to display the SWR in a bar
graph readout.
graph readout.
o
When [PTT] is released, the frequency marker and
frequency indication move to the next frequency to
be measured.
frequency indication move to the next frequency to
be measured.
!0
Repeat steps
i
.and
o
to measure SWR over the
entire frequency range.
!1
When the measured SWR is less than 1.5, the
antenna is well matched.
antenna is well matched.
■
SWR
The IC-706MKIIG has a built-in circuit for measuring
antenna SWR while in SSB mode—no external equip-
ment or special adjustments are necessary.
antenna SWR while in SSB mode—no external equip-
ment or special adjustments are necessary.
☞
NOTE: The SWR of ANT1 only can be read since
ANT2 has no measuring circuit.
ANT2 has no measuring circuit.
D
Measuring SWR
CH
VFO A
SWR
S1
1 1.5 2
3
5
3
7
9
20
40 60dB
CW
BLANK
SWR
1 1.5 2
3 5
10
The best match is in this range.
∞
∞
M3 FIL NB
MET
G2 10k
STR
Frequency span
Step bar indication
Frequency indication mark
Frequency indication mark
Measure start indicator
Span
Push [F-1] for 1 sec. to change the
selected span.
selected span.
Step bar
Push [F-2] for 1 sec. to change the step
bar (3, 5, 7 or 9 steps are available.
bar (3, 5, 7 or 9 steps are available.
Marker
Indicates the currently active step bar.
Start
Flashes while the SWR is being mea-
sured.
sured.
Step
o
The antenna is well matched in this range
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
USB
BLANK
G2 50k
STR
4.0
3.5
3.0
2.5
2.0
3.5
3.0
2.5
2.0
1.5
1.0
1.0
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
BLANK
G2 50k
STR
STR
___
RTTY
Step
y