On-Line Service And Support; Appendix A. - Trouble Shooting Guide; Appendix B. - Technical Specifications - Retevis RB627B Bedienungsanleitung

7. ON-LINE SERVICE AND SUPPORT

Appendix A. – Trouble shooting guide
Phenomena
The battery may be installed improperly.
You cannot turn
The battery power may run out.
on the radio.
The battery may suffer from poor contact
caused by dirty or damaged battery contacts.
The battery voltage maybe low.
During
The volume level may be low.
receiving, the
The antenna maybe loose or maybe installed
voice is weak or
incorrectly.
intermittent.
The speaker maybe blocked.
You cannot The frequency or signaling type maybe
communicate with
inconsistent with that of other members.
other group
members. You may be too far away from other members.
You may be interrupted by radios using the
You hear
same frequency.
unknown voices
The radio in analog mode maybe set with no
or noise.
signaling.
You may be too far away from other members.
You may be in an unfavorable position. For
You are unable
example, your communication may be
to hear anyone
blocked by high buildings or blocked in an
because of too
underground area.
much noise
It may be the result of external disturbance
and hiss.
(such as electromagnetic interference).
The radio keeps VOX may be turned on or the headset is not
transmitting.
installed in place.
NOTE: If the above solutions cannot fix your problems, or you may have some other queries,
please contact your dealer
for more technical support.

Appendix B. - Technical Specifications

General
Frequency Range
Operation Voltage
Battery Capacity
Frequency Stability
Operating Temperature
Mode of Operation
Antenna Impedance
Analysis
PMR446/FreeNet
DC3.7V ±10%
1500mAH (Li-Ion)
±2.5ppm
-20℃ to +50℃
Simplex
50ohm
11
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.