Cobra Electronics 29 NW specifications Calibrate For SWR Standing Wave Ratio

Operation Operation

Calibrate For

SWR (Standing

Wave Ratio)

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 optimum performance.

29 NW LTD CLASSIC

N B /	C B	H I	TONE C H 1 9
A N L			RX/TX ANT
A N L			C H 9
O F F	PA	N O R	N O R
E	R F G A I N	DIMMER
			SWR CAL
A X M I N		M A X M I N	M A X

1Select channel 20.

PUSH &

HOLD

3Push and hold mic button.

	29 NW LTD CLASSIC
N B /	C B	TONE	C H 1 9
A N L		H I	RX/TX ANT
A N L
			C H 9
O F F	PA	N O R	N O R
E	RFGAIN	DIMMER
			SWR CAL

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 higher on Channels 1 and 40 compared to Channel 20.

Note

SWR 2 3 CAL

RF

SIG 1 3 5 7 9 +30dB

VOL SQL

OF F

			29 NW LTD
S / R F		N B /	C B
		A N L
S W R		A N L
C A L		O F F	PA	N
DYNAMIKE		RFGAIN
M I N	M A X M I N			M A X

M A X M I N	M A X M I N	M A X
4 While holding mic
				SWR		2	3		CAL
button adjust the
SWR CAL knob so the					RF
meter needle swings			SIG 1			3	5	7 9	+30dB
to the CAL ▼ mark on

ANT Warning indicator will illuminate when SWR is above 3 on the scale (Check antenna system).

2 Switch to the CAL position.

the meter (located on the right).

continued

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