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SureCall 5X Max Signal Booster

SureCall  |  SKU: SC-5XMax-Y2U
Inside Antenna

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The SureCall 5X Max signal booster is two amplifiers in one case and incorporates SureCall's new ERT technology, which boosts cell signal at the point where it's received by the outside antenna, resulting in minimal signal loss, cleaner cell signal, and maximum coverage inside.

This amplifier also features the SureIQ technology, which allows the amplifier to adjust its boosting power all the way down to 0, so it can handle any strength of outside signal without overloading.

It will boost all of the networks from the major carriers in North America, so it's the perfect solution for any large home or business.

Why the SureCall 5X Max?

  • Equivalent to two amplifiers in one case with two output ports for antennas.
  • ERT technology boosts the cell signal before it is sent over a cable, so there is minimal signal loss.
  • The strongest downlink power (+16dBm) gives you the largest coverage area when you have a strong outside signal.
  • Strongest gain (boosting power) allowed by the FCC, for the most coverage inside with a weak to moderate outside signal.
  • SureIQ technology can handle any strength of outside signal, so the amplifier will never be overloaded.
  • Works wirelessly. No physical connection to your phone required.
  • Supports multiple phones and all carriers at the same time.
  • Everything you need is included in the kit.
  • Fewer dropped calls
  • Faster Internet data speeds
  • Better voice quality
  • Texts that send quickly
  • Longer battery life

Your purchase is covered by our 60-day money-back guarantee, so you can try it risk-free, and our friendly, US-based technical support team is standing by to assist with anything you need. Your equipment is also covered by a 3-year manufacturer warranty, for extra peace of mind.

Recommended For

The SureCall 5X Max is a great solution for anyone who needs maximum coverage and has a weak to moderate signal outside. The 5X Max is recommended for both homeowners and professional installers in large buildings who need the most boosting power possible and have a large space to cover with boosted signal.

How it Works

The 5X Max works by mounting the outside antenna and ERT amplifier at or above the roofline of the building that requires better signal, in a location where the antenna can pick up the strongest existing outside cell signal. The signal is received by the antenna and is immediately passed to the ERT amplifier, which boosts the signal. The boosted signal is then sent over a cable into the building, where it is received by the inside 5X Max amplifier, which distributes the boosted signal to the internal antennas within the space. Those antennas broadcast the improved signal to the area where they are located.

The entire process also works in reverse, so you get a strong and reliable connection back to your carrier.

Inside Antenna Options

  • 2 Ultra Thin Dome Inside Antennas: This antenna has up to 7.5 dB of gain and a very low profile when mounted to a ceiling compared to the standard dome antenna. You must have access to the backside of the ceiling in order to run a cable to it, so it is an ideal antenna for a drop ceiling panel. Dome antennas typically will only cover a single floor but can possibly cover multiple floors depending on the floor construction in between.
  • 2 Panel Inside Antennas: This antenna has 10 dB of gain and is generally mounted on the ceiling aimed downwards in the center of the space that needs boosted signal, but can also be laid face down on the floor of an attic or space above the ceiling, again in the center of the space that needs boosted signal, and it will broadcast boosted signal through the floor to the space below. Finally, panel antennas can be mounted on a wall and broadcast boosted signal across a space.

Estimated Inside Coverage

The strength of your existing outside signal, measured in the location where you plan to mount the outside antenna, has a direct impact on the amount of inside coverage you'll get from a signal booster. The table below shows how much coverage you may get depending on your outside signal strength:

Existing Outside Signal Strength Estimated Inside Coverage
Strong (5 Bars) Up to 50,000 sq ft
Medium (3-4 Bars) Up to 18,750 sq ft
Weak (1-2 Bars) Up to 5,000 sq ft
None (0 Bars) No Coverage

Please Note: It is important to remember that there are many factors that impact the size of the inside coverage area, so actual results may vary from these estimates.

Additional Coverage

If you need more coverage than the SureCall 5X Max Signal Booster will provide due to a weak outside signal, then you can install multiple systems in the same location. Please contact us for assistance with mapping out the ideal location for each system.

Will this Work for my Phone and Carrier?

The SureCall 5X Max has been designed to work with all cell phones and all carriers in the United States, Canada, and Mexico, as well as carriers from some other countries in Latin America, South America, and Australia.

Supported Phones All Cell Phones, Hotspots, and any Devices that use Cellular Data
Networks 2G, 3G, 4G LTE & 5G
Frequencies 700, 800, 1900, 1700/2100 MHz
Carriers Works for all Carriers in North America, including: AT&T, Verizon, Sprint, T-Mobile, US Cellular, Bell, Telus, Rogers, Freedom Mobile

Please Note: This signal booster will not work in most European, Asian, and African countries, as the frequencies used there are different than those boosted by this equipment.

In the Box

  • SureCall 5X Max ERT Amplifier
  • SureCall 5X Max Inside Amplifier
  • SureCall Power Supply
  • SureCall Yagi Outside Antenna
  • 2 x SureCall Panel Inside Antenna
  • 2 x SureCall Ultra Thin Dome Inside Antenna
  • 3 x 100 ft SureCall LMR400 Cable


  • Warranty Length
    3 Years

Regulatory Advisories

This is a CONSUMER device.
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. WARNING. E911 location information may not be provided or may be inaccurate for calls served by using this device.

Please note, the four largest carriers - AT&T, T-Mobile, Verizon and Sprint - and more than 90 regional carriers have given blanket consent for use of all boosters certified to the new FCC standards.

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SureCall 5X Max Signal Booster

SureCall 5X Max Signal Booster


Inside Antenna

  • 2 Ultra-Thin Dome Antennas
  • 2 Panel Antennas

What You Should Know


Uplink Frequency Ranges (MHz)


Downlink Frequency Ranges (MHz)


Max Gain


Max Uplink Power




Cable Type




Plenum Rating


RF Connectors


Antenna Type


Power Supply


Frequency Range


Includes Connectors


Output Ports


Output Voltage


Outside Antenna Options


Inside Antenna Options


Number of Inside Antennas

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