Retevis H-777, User Manual, Page: 8 / 12

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Retevis
WRITE FREQUENCY SOFTWARE OPERATING PROCESS
1. Find the software settings, open communication port, to ensure
the communication port Option and computer connection port
consistent (inconsistent will not read frequency) to solve the
related problem
2. In the menu to find reading frequency and click in the window
that appears can reading frequency
3. This process needs waitting for a while, after the completion
of reading the progress bar shows the walkie talkie channels
and frequencies that have been read into the current software
4. Modify the walkie talkie channel and frequency data, and other
functional parameter data
5. Find the write frequency in the menu, click the appeared window
to confirm , complete the progress bare
6. if multiple walkie talkie needs the same frequency, frequency
steps can be repeated to write
RELATED PROBLEM SOLVING
When reading or writing frequency of walkie talkie long time
no response or a communication error?
1. check the write frequency line to find if it is damaged
2. check wether the write frequency line with computer serial port
or walkie talkie interface is bad or loose
3. Check to find whether the walkie talkie battery is low or out of
power, if this ,please replace the battery or charging the battery
4. Check whether the programming software is match with the
current model
5. Please check whether the write frequency software port settings
are assigned to the computer USB port
6. Please check whether the power is switched on the walkie talkie
7. Whether to choose the corresponding drive system and the
correct installation
Retevis
When writing the frequency is completed, found two walkie
talkie cannot normal call or receive
1.Make sure whether the two walkie-talkie are in the same channel
2.Determine the same channel at the receiving end CTCSS, CDS
and the transmitter is not the same
3. make sure whether the two walkie talkie' volume is too low, if
it is too low ,Tum on the volume
4. Please check whether the two walkie-talkies are open, or at
low/no power status
5. Check wether The walkie-talkie installed antenna
6. check and confirm wether the communication distance is too
far
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