Cobra 29 LTD Classic User Manual page 6

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
optimum performance.
Note
Antenna Indicator LED
will illuminate when TX if
SWR is high.
1 Select channel 20.
2 Switch to the CAL position.
10
Push and hold mic button.
3
While holding mic
4
button adjust the
SWR CAL knob so the
meter needle swings
to the CAL mark on
the meter (located on the right).
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).