The CEL-FI Difference

Intelligent, Powerful, and Licence-Exempt

Unlike traditional analogue boosters or passive antenna systems, CEL-FI is a new class of smart signal booster. Its award-winning technology, centred around the proprietary IntelliBoost® chipset, delivers performance that is demonstrably superior and, crucially, unconditionally network safe.
Up to 100dB Signal Gain
Gain that is up to 1000x stronger than other technologies, transforming weak external signals into powerful indoor coverage.
Ofcom Licence-Exempt
The only smart signal booster technology fully compliant with UK regulations (IR 2102), legal on all networks.
Unconditionally Network Safe
Designed to protect mobile network integrity - authorised by over 200 carriers globally.
Intelligent & Self-Optimising
IntelliBoost® processor continuously monitors and adapts in real-time, preventing interference.
Scalable for Any Environment
From small offices with CEL-FI GO to large campuses with CEL-FI QUATRA - scalable solutions.
5G Ready Technology
Future-proof your connectivity with full 5G support. Amplifi-Qx enhances 2G through 5G signals, ensuring you're ready for tomorrow's mobile technology today.

Amplifi-Qx Digital: Powered by CEL-FI QUATRA

For medium to large enterprise environments, our core solution is powered by CEL-FI QUATRA technology. This powerful hybrid active DAS (Distributed Antenna System) provides a highly advanced and cost-effective alternative to traditional active DAS installations.

QUATRA distributes pristine, high-quality mobile signal throughout a building using structured cabling (Cat5e or better), delivering a cellular experience that feels as robust and reliable as your fibre broadband. It is the engine behind our premier Amplifi-Qx Digital service.

QUATRA Advantages

  • Multi-Network Support
    Delivers coverage for all UK networks simultaneously
  • Rapid Deployment
    Installation is significantly faster and less disruptive than traditional DAS
  • Cost-Effective
    Provides the performance of active DAS at a fraction of the cost
  • Fully Managed
    Integrates seamlessly with Amplifi-Qx for remote monitoring and management

A Partnership Built on Innovation and Trust

Our relationship with Nextivity goes far beyond that of a typical integrator. We are proud to have a deep-rooted, collaborative partnership with the creators of CEL-FI technology.

The Signal Solutions team meets regularly with Nextivity's leadership and engineering teams to collaborate on a range of projects, share real-world performance data, and push the boundaries of what's possible with in-building cellular.

Unique Integration

The Nextivity WAVE API Advantage

Through our close collaboration and technical expertise, we have pioneered a unique level of integration with the WAVE API. Recognised by Nextivity's leadership for our advanced approach, we are able to securely extract and process raw performance data from our clients' CEL-FI systems. Our Amplifi-Qx service leverages this data to provide a level of insight and proactive support that is unmatched in the industry.

Versatile Solutions for Every Need: CEL-FI GO

While QUATRA powers our flagship enterprise solution, we also utilise the rugged and versatile CEL-FI GO booster in our Amplifi-Qx Analogue service. The GO is perfect for smaller offices, specific zones within larger buildings, or challenging environments where a single point solution is required. It embodies the same core principles of intelligent, network-safe signal boosting, ensuring we have a trusted CEL-FI solution for any scenario.

Choose a Partner, Not Just a Product

When you choose Signal Solutions to solve your mobile coverage challenges, you get more than just a signal booster. You get:
The World's Best Technology
We exclusively use CEL-FI by Nextivity, the only Ofcom-compliant and network-safe smart signal booster on the market.
A True Partnership
We leverage our deep, collaborative relationship with Nextivity to deliver expert-level design and support.
Unprecedented Insight
The unique integration between Amplifi-Qx and Nextivity's WAVE Portal provides a fully managed service with proactive monitoring.

Experience The CEL-FI Advantage

Ready to transform your mobile connectivity with the world's most advanced signal booster technology?