Sometimes referred to a modem signal booster, a cellular booster amplifies a cellular signal within a given area to achieve faster data speed, a wider range of coverage with less drops. 

A cellular booster will not work if there is no signal to start with. Modem signal boosters require at least some signal to amplify. 

In A Nutshell, A Cell Phone Reception Booster can 

  • Boost the 4G LTE, 3G or 2G voice signal in a building, vehicle or remote location. 
  • Enhance the internet speed, text, and talk quality. 
  • Maintain a reliable connection with less drops. 
  • Widen the reception area.  


A cell phone reception booster cannot: 

  • Boost satellite and cable providers internet or Wi-Fi. 
  • Create working 4G LTE and 3G signals where there is no coverage. There must be at least one bar of coverage for a signal booster to work. 

How Does A Signal Booster Work?

Outside walls made of concrete, metal rooms and even interior walls all contribute to reducing a cellular signal inside. A cell phone booster works by pulling in weak signal, boosting it, and then rebroadcasting it inside your area in need.

Most signal boosters are a three-part system:

  1. The Outside Antenna to capture weak cell signal.
  2. The Amplifier to boost the weak signal.
  3. The Inside Antenna to rebroadcast the enhanced signal inside your home or car.

Area Enhancement solutions work by taking the coverage from the outside and extending it inside, creating a “bubble” of ideal coverage for you and your customers.  They do this by increasing the signal and improving the quality. 

The result?  You get better coverage in all areas of your business.

What is a Smart Signal Booster?

Novotech’s key partner Cel-Fi produces some of the most reliable Smart Signal Boosters on the market. These boosters use all-digital powerful baseband processors to clean the coverage prior to rebroadcasting.  

Smart reception amplifiers come with over 100 dB gains while their analog counterparts have 63-70 dB gains. Along with being digial, these units also come with great features such as plug and play, internal donor antenna inside the box of the booster and no outdoor antennas are needed. 

Top 3 applications for a Cellular Signal Booster

In a particular area:

Area enhancement solutions are designed to enhance the cellular signal for all devices in a particular area from a small showroom to a huge arena.

For a single device:

In-Line enhancement solutions offer improved coverage for a single device deployment.  These are commonly used for sites that are remote or mobile.  Industries that use these solutions regularly include:  Power Utilities, Oil/Gas, Government and Environmental monitoring.

In a vehicle:

Mobile Signal enhancement solutions are designed for the harsh life of a road warrior.  They increase the cell signal while in the car to ensure that important calls stay connected and you can access key information when you need it, where you need it.


Read here how the McGee family used the Cel-Fi Go for a reliable cellular coverage to run home business and to keep the family safe. 

What Cellular Signal Booster should I choose?

There are 3 distinct types of Cellular Signal Booster installations 

Smaller offices installations are usually able to be done without professional installation.  They generally involve no outside antenna installation and are usually sufficient for areas up to 5000 square feet.  For most installations, it can generally be done in under an hour (sometimes in as little as 10-15 minutes!)


Complex installations are when either some specialized equipment (such as high-gain antennas and customized cable lengths) are use or when cables have to be run inside of walls and ceilings.  Some users may be able to install these themselves, but in most cases, it is advisable to have it done by a professional for best results. 


Large scale installationsis when more complex pieces of equipment have to be deployed.  As well, they often involve the complexity of doing “signal site surveys” and other diagnostics.  With very few exceptions, it makes sense for these installations to be done by a skilled installation company. 


CelFi PRO Extends Cellular Coverage at San Ysidro Health Center

Read the case study on how Cel-Fi helped CSIRO improve cellular coverage in well-insulated areas of the new, 4-story building with an area of over 150,000ft² (14,000m²) and more than 5,000 employees.

The CSIRO solution summary is a great example of a large scale installation as more complex pieces of equipment we deployed.  Cases like this involve the complexity of doing “signal site surveys” and other diagnostics.  With very few exceptions, it makes sense for these installations to be done by a skilled installation company.  


Products used 

  • 10 Cel-Fi GO Smart Signal Boosters  
  • Omni High Gain Antennas,  
  • DAS Ultrathin Clear Antennas and Reflectors. 

Download the Cel-Fi Signal Booster Case Study (pdf)