Improving Radio Coverage
Wireless connectivity between radio-equipped portable terminals and host computers is unique and
maintaining this wireless connectivity over a wide area is fundamental to the usefulness of the
network. As such, the scope and reliability of radio coverage is a primary concern. Therefore, one of
the most important features of the wireless network is the degree of radio coverage provided.
Coverage is influenced by terrain, buildings or a crowded room. There are many things that can be
done to improve coverage depending on location.
In any location
1.
Performance can vary significantly at different times of the day.
2.
Weather can affect performance.
On the street
1.
Try all sides of a building to see which side provides the strongest radio signal.
2.
Move from under trees. Pine needles absorb radio signals more than leaves.
3.
Move away from overhead electrical wires.
4.
Radio signals reflect off other buildings. Even in the signal shadow, the signal could be reflected
back by another building.
5.
Try not to hold the unit. If possible, place it in vehicle, on a cabinet or desk.
6.
If holding the unit, turn the unit in 90-degree increments to avoid shielding it with your body.
7.
The signal is 1 - 2 feet across; therefore, moving several feet in any direction may give different
results.
Inside a Building
1.
Move toward windows.
2.
Signals do not penetrate ground, therefore, there will probably be no signal in basements.
3.
Reflective coatings on windows reflect radio signals. Try the side of the building that is least
likely to have coated windows.
4.
Closed metal blinds can reflect radio signals.
5.
Dropped ceilings sometimes hide an accumulation of electrical cable.
Electromagnetic Interference (EMI)
1.
Electromagnetic Interference (EMI) is generated by switching circuitry closets or Un-interruptable
Power Source (UPS) systems found near computer rooms and can block the radio signal.
2.
Look for significant sources of electromagnetic radiation. The problem may emanate from a
source between location and the radio base station.
When to use landline communication
If these tips do not improve radio signal strength, switch to landline communication. Switching to
landline communication is faster than searching for and trying to improve the radio signal.
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