Mobile CX6 23dB 6-Band 4G/5G Ready LTE Extreme Power Cellular Booster with Patch Antenna and 2" Magnetic Antenna

Note: Does not support Sprint bands 26 (lower 800MHz) and band 41 (2500 MHz)

BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider’s consent. Most wireless providers consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure, contact your provider. You MUST operate this device with approved antennas and cables as specified by the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any person. You MUST cease operating this device immediately if requested by the FCC or a licensed wireless service provider.

MSRP $279.99

All SmoothTalker BTUX623MSPH kits include

CX6 23dB Extreme Power Mobile Coupling Booster

SKU: BTUX623xaa

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120V Wall Power Supply


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4' Patch Antenna MCT Female Conn


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2" MCT Small Mag


2" Mast w/2" Mag Mct

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Description Type Link
User Manual PDF Download

The Smoothtalker Mobile CX6 23dB gain booster is designed for single user with a phone holder. It improves cell phone signal in remote locations, reduces dropped calls and increases data speed. This plug and play kit has everything you need for quick and easy installation. Available with universal charging cradle that fits both small and large smartphones and or custom charging cradles specific to most popular phones.

How it works:

The Booster captures the signal outside the vehicle and boosts it to the phone. It takes the weak signal from the phone and boosts it back to the tower. Boosts both voice and data simultaneously.

Where can this booster be used:

The Mobile CX6 23dB is used primarily in vehicles but can also be used in a fixed location such as in a Motorhome or on a desktop.

(Fixed location use requires additional optional parts which are not included in the kits)

How far away from the tower can I expect to get with the Booster

Mobile CX6 23dB is the most powerful hold er connect booster on the market and can keep you connected as far as 35 mi from the nearest tower. (Note: this chart shows signal bars and distance with the booster connected.)

Assessing your outside cellular signal level

Use Signal Bar Indicator

Use the signal bar indicator on your cellular device to approximate signal strength as per the chart above.

Note: Even if your device shows no bars or "no service" it is possible that there is enough cellular signal for a booster to achieve communication with the network.


  • Mount outside antenna in the center of the vehicle roof except in cases where a sunroof is present. In this case mount the antenna towards the back of the vehicle in the center of the metal portion of the roof.
  • Mount the inside antenna in the back of the cellular device or place in to the cradle.
  • Flashing green LED lights indicate gain reduction. If the green lights on the booster are flashing, please refer to the user manual for instructions.

STEALTHTECH TECHNOLOGY (proprietary Smoothtalker technology):

Mobile CX6 23dB amplifiers and boosters use STEALTH TECH® to automatically control gain to eliminate feedback loop (oscillation) and strong signal overload from nearby towers. This will keep your booster working without unexpected shutdowns and at maximum efficiency.