Appendix A. – Trouble shooting guide
7. ON-LINE SERVICE AND SUPPORT
Phenomena
You cannot turn
on the radio.
During
receiving, the
voice is weak or
intermittent.
You cannot
communicate with
other group
members.
You hear
unknown voices
or noise.
You are unable
to hear anyone
because of too
much noise
and hiss.
The radio keeps
transmitting.
Analysis
The battery may be installed improperly.
The battery power may run out.
The battery may suffer from poor contact
caused by dirty or damaged battery contacts.
The battery voltage maybe low.
The volume level may be low.
The antenna maybe loose or maybe installed
incorrectly.
The speaker maybe blocked.
The frequency or signaling type maybe
inconsistent with that of other members.
You may be too far away from other members.
You may be interrupted by radios using the
same frequency.
The radio in analog mode maybe set with no
signaling.
You may be too far away from other members.
You may be in an unfavorable position. For
example, your communication may be
blocked by high buildings or blocked in an
underground area.
It may be the result of external disturbance
(such as electromagnetic interference).
VOX may be turned on or the headset is not
installed in place.
solution
Remove and reattach the battery.
Recharge or replace the battery.
Clean the battery contacts or
replace the battery.
Recharge or replace the battery.
Increase the volume.
Turnoff the radio, and then
remove and reattach the antenna.
Clean the surface of the speaker.
Verify that your TX/RX frequency
and signaling type are correct.
Move towards other members.
Change the frequency, or adjust
the squelch level.
Request your dealer to set
signaling for the current channel
to avoid interference
Move towards other members.
Move to an open and flat area,
restart the radio, and try again.
Stay away from equipment that
may cause interference.
XTurn off the VOX function.Check
that the headphones are in place.
11
NOTE:
If the above solutions cannot fix your problems, or you may have some other queries,
please contact your dealer
for more technical support.
General
Frequency Range
Operation Voltage
Battery Capacity
Frequency Stability
Operating Temperature
Mode of Operation
Antenna Impedance
PMR446
/
FreeNet
DC3.7V ±10%
1500mAH (Li-Ion)
±2.5ppm
-20
℃
to +50
℃
Simplex
50ohm
Appendix B. - Technical Specifications
