1.
First, determine the fan is the source of interference by checking whether the readings
change when the fan is turned off or when the fan speed is increased or decreased.
2.
Engage the fan-defeat feature. This should eliminate the problem in most cases.
2.
If the problem persists, reduce the effects of the fan by locating the Ranger EZ antenna in
an area that is less susceptible to the fan motion. MPH Industries provides several
mounting options. In some cases, the left-hand corner of the dash has been found to be
the best mounting location. Alternately, the antenna may be mounted outside of the
patrol vehicle.
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