Icom IC-706MKIIG Home Security System User Manual


 
38
4
RECEIVE AND TRANSMIT
The IC-706MKIIG can measure SWR in 2 ways:
(A) Spot measurement; or (B) Plot measurement.
(A) Spot measurement
Conrm that the output power is over 30 W.
Push [MENU] one or more times to select M3.
Push [(F3)MET] to select the SWR meter.
Push [MODE] one or more times to select CW or
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.
qConrm that the output power is over 30 W.
wPush [DISPLAY] twice to select G1.
ePush [MENU] to select G2.
rSet the center frequency for the SWR to be mea-
sured.
tPush and hold [(F1)10k] one or more times to
select the desired frequency pitch.
yPush and hold [(F2)] one or more times to select
the desired step.
uAfter selecting the desired pitch and step, push
[(F3)STR] to measure the SWR.
iPush and hold [PTT] to display the SWR in a bar
graph readout.
oWhen [PTT] is released, the frequency marker and
frequency indication move to the next frequency to
be measured.
!0Repeat steps i.and o to measure SWR over the
entire frequency range.
!1When the measured SWR is less than 1.5, the
antenna is well matched.
SWR
The IC-706MKIIG has a built-in circuit for measuring
antenna SWR while in SSB modeno external equip-
ment or special adjustments are necessary.
NOTE: The SWR of ANT1 only can be read since
ANT2 has no measuring circuit.
D Measuring SWR
CH
VFO A
SWR
S1
1 1.5 2 3
5379
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
Measure start indicator
Span Push [F-1] for 1 sec. to change the
selected span.
Step bar Push [F-2] for 1 sec. to change the step
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.
Step o
The antenna is well matched in this range
CH
VFO A
P
O
S1
5
5379
20 40
10
60dB
USB
BLANK
G2
50k
STR
4
.
0
3
.
5
3
.
0
2
.
5
2
.
0
1
.
5
1
.
0
CH
VFO A
P
O
S1
5
5379
20 40
10
60dB
BLANK
G2
50k
STR
STR
_
_
_
R
TT
Y
Step y