Installation Instructions
Page 17
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Model MXT400
UTILITY FUNCTIONS
Utility functions let you congure several operational parameters of the
MXT400 to suit your personal preferences. For additional operational
functions, see “MENU” MODE FUNCTIONS.
Selecting a Privacy Code
Continuous Tone Coded Squelch System (CTCSS) and Digitally Coded
Squelch (DCS) are systems that allow several users to share the same
channel without disturbing each other. When CTCSS or DCS are enabled
for a selected channel, the channel is muted to all incoming signals unless
they carry the correct CTCSS or DCS tone.
When a transmission with the correct tone is received, the mute is
removed and the voice audio can be heard. When the transmission ends
the channel is muted again. Transmissions that do not have the correct
tone are not heard.
The MXT400 has 142 Privacy Codes (38 CTCSS codes and 104 DCS
codes), which can be applied to any channel. If desired, you can select
a different Privacy Code for each channel. See CTCSS Privacy Codes
Frequency Chart and DCS Privacy Codes Chart for lists of available
Privacy Codes.
IMPORTANT! To communicate between two MXT400 radios or any GMRS
radio, both radios must be set to the same channel (see Selecting the
Active Channel) and Privacy Code selections.
To select a CTCSS Privacy Tone:
1. Press the TS/DCS button once to enter the CTCSS Privacy Code
settings.
2. Use the Channel Knob to scroll forward or backward through the
CTCSS Tone options until the LCD displays the privacy tone frequency
desired.
3. Press the Select button to conrm your selection.
▪ The icon will show on the LCD display, according to your
selection.
4. Press the Scn/Mon button to exit Privacy Code settings.