Icom I706MKTMG DMeasuring SWR, M3 FIL NB, G2 50k, A Spot measurement, B Plot measurement, Span

Models: I706MKTMG IC-706MKIIG

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DMeasuring SWR

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.

RECEIVE AND TRANSMIT 4

NOTE: The SWR of ANT1 only can be read since ANT2 has no measuring circuit.

DMeasuring SWR

The IC-706MKIIG can measure SWR in 2 ways:

(A) Spot measurement; or (B) Plot measurement.

(A) Spot measurement

Confirm 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.

CW

 

 

 

 

 

 

BLANK

S1

3

5

7 9

20

40 60dB

VFO A

SWR

1

1.5 2

3

 

CH

M3 FIL NB

MET

SWR

 

1

1.5

2

3 5

10

The best match is in this range.

(B) Plot measurement

Plot measurement allows you to measure the SWR over an entire band.

G2 10k

STR

Frequency span

 

Step bar indication

 

Frequency indication mark

 

Measure start indicator

 

qConfirm 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.

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 y

 

 

 

 

 

 

 

 

RTTY

 

 

 

 

 

 

BLANK

S1 3 5

7 9

20

40

60dB

VFO A

PO

5

 

 

10

CH

G2 50k

 

 

STR

Step o

 

 

 

 

 

 

USB

 

 

 

 

 

 

 

 

 

BLANK

S1 3 5

7 9

20

40

60dB

VFO A

PO

5

 

 

10

CH

G2 50k

 

 

STR

4.0

3.5

3.0

2.5

2.0

1.5

1.0

The antenna is well matched in this range

38

Page 41
Image 41
Icom I706MKTMG DMeasuring SWR, M3 FIL NB, G2 50k, A Spot measurement, B Plot measurement, Span, selected span, Step bar