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MM23772, Rev. F
13
3 OPERATING TIPS
Antenna location and condition are important when operating a portable radio. Operating the radio in low
lying areas or terrain, under power lines or bridges, inside of a vehicle or in a metal framed building can
severely reduce the range of the unit. Mountains can also reduce the range of the unit.
In areas where transmission or reception is poor, some improvement may be obtained by ensuring that the
antenna is vertical. Moving a few yards in another direction or moving to a higher elevation may also
improve communications. Vehicular operation can be aided with the use of an externally mounted
antenna.
Battery condition is another important factor in the trouble free operation of a portable radio. Always
properly charge the batteries.
3.1 EFFICIENT RADIO OPERATION
For optimum audio clarity at the receiving radio(s), hold the portable radio approximately two inches
from your mouth and speak into the microphone at a normal voice level.
Keep the antenna in a vertical position when receiving or transmitting a message.
Do not hold the antenna when receiving a message and, especially, do not hold when transmitting a
message.
Do NOT hold onto the antenna when the radio is powered on!
3.1.1 Antenna Care and Replacement
Do not use the portable radio with a damaged or missing antenna. A minor burn
may result if a damaged antenna comes into contact with the skin. Replace a
damaged antenna immediately. Operating a portable radio with the antenna missing
could cause personal injury, damage the radio, and may violate FCC regulations.
Use only the supplied or approved antenna. Unauthorized antennas, modifications or
attachments could cause damage to the radio unit and may violate FCC regulations
(refer to Table 6-1).
3.1.2 Electronic Devices
CAUTION
RF energy from portable radios may affect some electronic equipment. Most modern
electronic equipment in cars, hospitals, homes, etc. is shielded from RF energy. However,
in areas in which you are instructed to turn off two-way radio equipment, always observe
the rules. If in doubt, turn it off!