7.4 Low Battery Warning
When the battery voltage drops too low while transmitting, the LED flashes red, low battery
warning tone sounds, and the radio stops transmitting. You need to recharge or change the battery.
7.5 Monitor
When there is no signal received, the radio's squelch circuit will mute the speaker
automatically so that the background noise will not be heard by the user. You can press and hold
the preprogrammed Monitor button to open squelch manually. This function is especially useful
when you need to adjust the volume level or to receive weak signals.
When the Monitor button is pressed and held, the LED indicator lights green, and the radio is
in the monitoring state.
7.6 CTCSS/DCS
CTCSS/DCS tones may have been pre-programmed on some radio channels. A CTCSS/DCS
tone is a sub-audible tone, which allows you to ignore (not hear) calls from other irrelevant parties
who are using the same channel. When you receive a signal that has a tone different from the one
set on your radio, you will not hear the signal. Likewise, signals that you transmit will only be
received by parties whose CTCSS/DCS tones are the same as yours.
Note: Using a CTCSS/DCS channel doesn’t mean your calls are private. If other parties’
CTCSS/DCS tones are identical with yours, they can hear your calls.
7.7 PTT ID
PTT ID uses DTMF code. The preset DTMF sequence can be sent at the beginning of the
transmission or at the end of the transmission. It is used to notify the identity of the callers to the
monitoring center, or used to activate the repeater.
The encoder sequence and the encoder type can be set for each channel. There are 16 groups
of sequences for your selection.
PTT ID Keydown Code:
The radio will send DTMF sequence when the PTT button is pressed.
PTT ID Dekey Code:
The radio will send DTMF sequence when the PTT button is released.
8. Troubleshooting
No.
Problem
Causes and Solutions
1
The radio cannot be switched
on or no display after being
switched on.
* The battery power may be insufficient. Please recharge or
replace the battery pack.
* The battery pack may not be installed properly. Please
remove the battery pack and install again.
2
The battery power consumes
quickly after charging.
* The battery life is finished. Please replace it with a new
battery pack.
3
Cannot talk to or hear other
group members.
* Make sure the CTCSS/DCS signal is the same as that of
your group members.
* The radio is out of effective communication range.
4
Other voices from non-group
members are heard on the
channel.
* Change the CTCSS/DCS signal, and make sure to
change the CTCSS/DCS signal of all radios in your group.
