Midland MICROMOBILE MXT400VP3 - Using an External Speaker; Device Controls and Indicators; Operating Controls

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Model MXT400
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midlandusa.com
Model MXT400
Power On/O󰀨
To turn the radio on and o:
1. With the radio o󰀨, quickly press and release the Power On/O󰀨 button to
turn the radio on.
▪ The LCD display will display the Midland welcome screen and then
display the most recently selected channel.
2. With the radio on, press and hold the Power On/O󰀨 button to turn the
radio o󰀨.
▪ The LCD display will go blank when the radio turns o󰀨.
Selecting the Active Channel
IMPORTANT! To communicate between two MXT400 radios or any GMRS
radio, both radios must be set to the same channel and Privacy Code (see
Selecting a Privacy Code) selections.
To select the active channel:
1. Be sure the radio is turned on (see Power On/O󰀨)
2. Rotate the Channel Knob clockwise to scroll forward through the
available channels. Rotate the Channel Knob counter-clockwise to
scroll backward through the available channels.
▪ The Channel icon on the LCD display will show the currently
selected channel.
Transmitting and Receiving a Call
IMPORTANT! To communicate between two MXT400 radios or any GMRS
radio, both radios must be set to the same channel and Privacy Code.
To transmit and receive a call:
1. Be sure the radio is turned on (see Power On/O󰀨)
2. To transmit a call, press and hold the PTT button on the microphone,
and speak into the microphone in a normal voice.
NOTE: For maximum clarity, hold the microphone 2 to 3 inches from your
mouth when speaking.
▪ The TX Indicator will show continuously on the LCD display while
transmitting.
3. To receive a call, release the PTT button on the microphone.
▪ The Busy icon will show on the LCD display when your radio is
receiving a transmission.
4. If necessary, rotate the Volume Knob to increase or decrease radio
volume.
Locking the Keypad
You can use the keypad “lock” function to prevent accidentally changing
your radio’s settings. When the function is enabled, the current radio
settings are “locked” in place.
NOTE: When the “lock” function is enabled, the PTT button on the
microphone and the Volume Knob on the radio remain active.
To “lock” and “unlock” the keypad:
1. Be sure the radio is turned on (see Power On/O󰀨)
2. Press and hold the Call button.
▪ The Keypad Lock icon will show on the LCD display when the
keypad is “locked.”
3. Repeat steps 1 and 2 to “unlock” the keypad.
▪ The Keypad Lock icon will turn o󰀨 when the keypad is
“unlocked”
Using Monitor Mode
Monitor mode lets you check for activity on the current active channel. You
can also use Monitor mode to adjust the volume of your radio when not
receiving a signal.
To enter and exit Monitor mode:
1. Be sure the radio is turned on (see Power On/O󰀨)
2. Be sure you have selected the desired channel (see Selecting the
Active Channel)