Case Study

Residential Property, Belgravia

The Problem

The elegant streets of Belgravia are lined with white rendered terraced townhouses, garden squares, international embassies, and upmarket hotels. Fine-dining restaurants and sophisticated cafes cater to the area’s wealthy international residents. But mobile signal is often a real problem in this part of the world.

We were contacted to help solve the mobile signal problem in a 2,200sqm residential property in the heart of Belgravia. This brick building was blocking the mobile signal and the ground, lower ground and basement floors were experiencing little to no coverage throughout. Our brief was to provide mobile signal for all networks.

Mobile-Signal-Belgravia
Cel Fi Certified Enterprise Installer Png
no signal

NO USABLE SIGNAL THROUGHOUT PROPERTY

2,500 sqm

HIGH END RESIDENTIAL TOWNHOUSE IN LONDON'S BELGRAVIA

amplifi-qx Digital

mobile signal booster solution using cel-fi technology

The SOLUTION

Site survey stage

After providing the client with a desktop survey and an initial cost estimate, the next stage was for our signal experts to carry out a site visit. Our signal engineers surveyed the property and ran signal tests throughout the building.

The chosen solution

Our Amplifi-Qx Digital solution was selected for this project. This included a CEL-FI QUATRA 4000e Network Unit, a QUATRA 4000e Fibre Hub and 6 QUATRA 4000e Coverage Units. Additionally, 4 external SISO panel antennas were installed to the outside of the mews building.

The CEL-FI QUATRA 4000e is a multi-carrier active DAS hybrid for 3G/4G/5G voice and data and delivers mobile signal that is up to 1000x stronger.

Installation challenges

This is a high end domestic property and our biggest challenge was that we were unable to run any new cables. Two parts of the building were connected by a fibre link and we were asked to utilise the comms cabinets and existing infrastructure. A fibre cable was available to us which meant that we could explore the new CEL-FI product range and use the CEL-FI QUATRA 4000e Fibre Hub to connect the two areas.

We were the first company in the UK to to install the CEL-FI QUATRA 4000e Fibre Hub and we are pleased to say that the installation was a huge success.

The Result

Significant improvement throughout

On completion of any installation we’ll always walk around the property to test the signal in various locations – comparing the boosted signal to the original signal readings.
 
Our team (and our client!) were delighted with the post install signal results; with all networks receiving a strong and consistent mobile signal providing voice and data coverage.

Immediate results

Our client was immediately impressed with the installation and commented on the dramatic improvement. SMS messages were delivered and they were able to make and receive calls including video calls.

Signal reading comparison

We use professional signal testing equipment to take dBm readings (decibel milliwatts) – we then compare these to the pre-install readings to calculate the increase in mobile signal. A really good dBm reading will be somewhere between -70dBm and -90dBm … the closer to zero the better!

3G Results

0

dBm
Vodafone 3G
0

dBm
O2 3G
0

dBm
EE 3G
0

dBm
Three 3G

4G Results

0

dBm
Vodafone 4G
0

dBm
O2 4G
0

dBm
EE 4G
0

dBm
Three 4G

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