Operation, Push & hold, Calibrate for swr (standing wave ratio) – Cobra Electronics 29 WX NW BT User Manual

Page 6: 11 10 continued, Select channel 20

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N B /
A N L
A N L

O F F

C B

PA

C H 1 9

C H 9

N O R

A X

M I N M A X

O

CB

W X

29 WX NW

RX/TX

WX

WEATHER

RF GAIN

M

7

1

6

2

5

3

4

ANT

T BACK

SWR CAL

While holding mic
button adjust the
SWR CAL knob so the
meter needle swings
to the CAL mark on
the meter (located on the right).

Operation

Operation

Calibrate For
SWR (Standing
Wave Ratio)

11

10

continued

Note

Calibration must be made in an
open area (never in a garage).
Vehicle doors must be closed. No
one should be standing near the
antenna. (See your antenna
directions for more complete
information).

Note
The reading will be slightly high-
er on Channels 1 and 40 com-
pared to Channel 20.

Push and hold mic button.

Switch to the

CAL position.

2

1

3

Calibrate for SWR (Standing Wave Ratio)

SWR calibration is done to properly adjust the
length of the antenna and to monitor the quality
of the coaxial cable and all RF connections.
This calibration is critical in order to achieve opti-
mum performance.

SIG 1

3

5 7 9

+30dB

2

3

CAL

RF

SWR

RF

S / R F

S W R

C A L

N B /
A N L
A N L

O F F

C B

PA

M I N

M A X

M I N M A X

O F F

V O L

S Q L

W

29 WX NW

RF GAIN

DYNA

D I M

1

PUSH &
HOLD

Select

channel 20.

4

N B /
A N L
A N L

O F F

C B

PA

C H 1 9

C H 9

N O R

M A X

M I N M A X

O

CB

W X

29 WX NW

RX/TX

WX

WEATHER

RF GAIN

M

7

1

6

2

5

3

4

ANT

T BACK SWR CAL

SIG 1

3

5 7 9

+30dB

2

3

CAL

SWR

RF

29WXNWBT_MANL.qx:29WXNWBT_MANL.qx 1/7/09 4:26 PM Page 10

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