Calibrate For Swr (Standing Wave Ratio) - Cobra 29 NW ST How To Use Manual

Operation
Calibrate For

Calibrate for SWR (Standing Wave Ratio)

SWR (Standing
SWR calibration is done to properly adjust the
Wave Ratio)
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.
29 NW ST
N B /
A N L
A N L
O F F
E
A X M I N
Select
1
Switch to the
2
10
TONE
C H 1 9
C B
H I
R X / T X
C H 9
PA N O R
N O R
R F G A I N D I M M E R
S W R C A L
M A X M I N M A X
channel 20.
29 NW ST
SWR 2 3 CAL S / R F N B /
C B
A N L
RF
S W R A N L
SIG 1 3 5 7 9 +30dB
PA
C A L O F F
V O L S Q L D Y N A M I K E R F G A I N
O F F M I N M A X M I N
CAL position.
PUSH &
HOLD
Push and hold mic button.
3
29 NW ST
N B /
C B H I
A N L
A N L
PA N O R
O F F
E R F G A I N
D I M M E R
M A X M I N M A X M I N
4 While holding mic
button adjust the
SWR CAL knob so the
meter needle swings
M A X
to the CAL
the meter (located on the right).
TONE
C H 1 9
R X / T X
C H 9
N O R
S W R C A L
M A X
SWR 2 3 CAL
RF
SIG 1 3 5 7 9 +30dB
mark on
continued
11
Operation
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.