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
TALK
-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 Radio’s
will not listen to CTCSS codes.