some of these users are operating on the same radio channel.
To prevent that you receive signals from other users, sub-
channels have been integrated.
Two radio's will only be able to communicate with each other
when they are operating on the same radio channel and when
they have selected exactly the same sub-channel.There are two
kind of sub-channels :
Continuous Tone Coded Squelch System (CTCSS)
When using CTCSS, a low frequency tone (between 67 and 250
Hz) will be transmitted along with the voice signal. There are
38 available tones to choose from. You are free to choose one
of these 38 available tones. Due to filtering, these tones will
generally not be audible so they will not disturb the
communication.
7.CTCSS
Press the
MENU
-button(
11
) twice : The current CTCSS
code flashes on the display.
Press the
▲
-button(4) or the
▼
-button(7) to change
to another code.
Press the
PTT
-button(
15
) to confirm and return to
stand-by mode.
Note:To disable CTCSS, select code "0F for CTCSS in
the menu.When the entry is confirmed, "OF" will be
displayed.
8.Monitor
You can use the monitor feature to check for weaker signals in
the current channel.
Press the
MON
-button to activate channel
monitoring.
Press the
MON
-button to stop channel monitoring.
Note:During channel monitoring the receiver circuit
in the Radios will not listen to CTCSS codes.
