Retevis RT638 Mode D'emploi page 8

PROBLEM
I cannot communicate with
other group members
You can hear the voice
from other users,but they
cannot hear you
Others hear my voice with
interruptions only
I hear too many stations
from outside my group
RF ENERGY EXPOSURE AND PRODUCT SAFETY GUIDE FOR PORTABLE TWO-WAY RADIOS
ATTENTION!
This two-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide
communications between two or more users over a distance. RF energy, which when used improperly, can cause
biological damage. All Retevis two-way radios are designed, manufactured, and ested to ensure they meet
government-established RF exposure levels. In addition, manufacturers also recommend specific operating
instructions to users of two-way radios. These instructions are important because they inform users about RF
energy exposure and provide simple procedures on how to control it. Please refer to the following websites for
1:Verify if the channel frequency and the CTCSS are the same in the whole
group.If you use factory default programming, this is automatically OK if all
members of your group use the same channel number.
2:The other group members are not with the radio coverage.
1:Please change your setting to exactly the same number as the partners are
using.
1:Too weak signal-too far away.
2:External mic defective? Please let service technology check.
1:Another group is using the same channel number -change channel.
Before using this radio, read this guide which contains important operating instructions
for safe usage and RF energy awareness and control for compliance with applicable
standards and regulations.
GUIDE
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