Midland MicroMobile® MXT400

Features

Overview: The Midland MXT400 is a GMRS (General Mobile Radio Service) two-way radio with a broadcast range of up to three times that of standard, hand-held, two-way radios (walkie talkies) providing a full 40 watts of power for a maximum operational range of up to 65 miles. Key features include: 15 high power GMRS channels, 8 repeater channels for increased range, 142 privacy codes, Auto channel-scan, and Silent Operation. The MXT400 is compatible with all Midland and most other brands of GMRS radios. Its compact and durable housing can be mounted under a dashboard or glove box with the included mounting hardware. The 2-way radio includes a hand-held PTT (push to talk) microphone. MXTA11 GMRS antenna and MXTA12 antenna mount sold separately.

Note: Operation of a GMRS radio requires an FCC license.

Range: With 40 watts of power, the MXT400 can provide exceptional communication range. The following is an estimated range guide:

• Maximum distance is up to 65  miles line of sight with no obstructions.
• 15 - 20 miles with partially obstructed line of sight (trees, small hills, etc).
• 5 - 10 miles with major obstructions to line of sight (buildings, larger hills, mountains, etc).

Channels: The MXT400 provides 15 GMRS channels that can be selected manually or with the Auto-scan mode that continuously scans all 15 available channels for activity. It also includes a Monitor Mode that lets you check for activity on the currently selected channel. This mode also lets you adjust the volume of the radio if you're not receiving a signal from an assigned transmitter. The MXT400 has the ability to access up to 8 repeater channels which can significantly increase the radio's range and coverage area.

• FRS Compatibility: FRS (Family Radio Service) radios share the some of the same channels as GMRS radios (1-7 & 15-22), however at a lower transmitting power level (2W or less). This allows the MXT400 to be used with FRS radios, but with a shorter communication range. Channels 8-14 are strictly for FRS radio use and cannot be used by the MXT400.
  • Note: If using a GMRS radio to communicate with an FRS radio, communication range will be limited to the FRS radio's ability.

Squelch and Privacy: Squelch is the ability of a transmitter/receiver to suppress or mute the channel if the signal level weakens enough. This helps keep out unwanted channel noise and stray signals from other devices, especially when there's no signal being sent from a transmitting device. The MXT400 has adjustable Squelch sensitivity, with a level of 00 being the most sensitive allowing the squelch to open on very weak signals and a maximum setting of 09 which requires a very strong signal to open the squelch. The radio also features Privacy Codes via CTCSS (Continuous Tone Coded Squelch System) and DCS (Digitally Coded Squelch). These systems allow several users to share the same channel without disturbing each other. When CTCSS or DCS is 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 lifted and the voice audio can be heard. The MXT400 has 142 total Privacy Codes, 38 CTCSS and 104 DCS.

Menus: The following are the 11 menu options available on the MXT400:

• TX: Transmit. This selection allows the transmitter to be disabled if using the radio as a receiver only.
• Talk: Talk Around Function. This allows you to directly communicate with other radios in your group when the repeater is not active or out of range.
• Comp: Voice Compander. This function is used to reduce background noise and enhance audio clarity, especially in long range communication.
• Mute: Silent Operation. When this function is On, all operational "beeps" and "tones" are disabled.
• Call: Call Alert. Used to select one of 5 available tones to alert of an incoming message.
• TOT: Time Out Timer. This limits the amount of transmitting time the radio has per PTT activation.
• APO: Auto Power-Off. Allows you to set a time interval to automatically power the radio off after no use.
• SQL: Adjusts the Squelch Sensitivity.
• Lamp: Allows the LCD display brightness to be adjusted with 6 levels available.
• RP: Repeater. Allows you to access any of the 8 repeater channels.
• Restore: Restores unit back to factory default.

Microphone:

• PTT: Push-to-talk. This activates a transmission when pressed.
• Channel Up/Down: These two buttons cycle through different channels.
• Lock Switch: This slide switch will lock the Channel buttons on the mic, but not the PTT button.

Front Panel:

• Channel: This dial cycles through all of the available channels.
• TX: This LED will light when transmitting a signal.
• Menu: Opens up the Menu options.
• Call/Lock: A quick press of this will send a call signal and a long press will lock the keypad.
• Power Level: This button cycles through the 3 transmit power levels; Hi, Mi, and Lo. Only Mi and Lo will be displayed with icons on the LCD screen.
• Power: Turns unit on/off.
• Volume
• Mic Jack: RJ45 jack for connecting the hand-held mic
• TS/DCS: This button cycles through the Privacy Tone options.
• Select: Allows any currently highlighted menu item to be selected.
• Scan/Mon: Pressing will enter scan mode, a long press enters monitor mode.
• Data Terminal: Not used.

LCD Display: The MXT400's display will show the following information:

• Transmitting Strength: Will display Mi or Lo unless Hi is selected (no icon will be displayed).
• A Icon: Shows if the Auto-Power Off option is on.
• + / - Icons: Indicate repeater offset.
• T SQ Icons: Display CTCSS Privacy Tone.
• DCS: Displays DCS Privacy Tone.
• Key Icon: Shows if the Keypad Lock is on/off.
• Compander Icon: Shows Compander selection.
• Signal Strength: A 5-segment meter shows signal strength.
• Busy Icon: Shows if the Receiver is active.
• Channel Name: Will be displayed in the center of the LCD.
• rP Icon: Displays the Repeater Channel if being used.

Rear Panel:

• ANT Jack: An SO-239 UHF socket for external antenna (sold separately).
• EXT SPKR: A 3.5 mm audio jack to connect an optional external speaker.
• External Power Jack: Power socket for an optional DC power supply .
• Power/Ground Pigtail: This is a non-removable 12" pigtail for the power and ground wires. The power wire includes an in-line fuse holder with a 15A fuse installed. A Molex plug on end of wires attaches to a Molex plug on the 79" power/ground extension harness. Additional fuse holders with 15A fuses are included on both the power and ground wires of the 79" extension harness. Wires terminate in bare-ends.

Specifications:

• Transmitting Power: 40 W
• GMRS Channels: 15
• Privacy Codes: 142
• Repeater Channels: 8
• Antenna: MXTA11 sold separately
• Accessories: Mounting bracket
• Dimensions: Width: 5.50", Height: 1.66", Depth: 7.44"