20210628_13123416-9.jpg

Swisscom mobile communications acceptance inspections.

New mobile phone masts, as well as systems that have been converted, must pass several acceptance tests by cablex, Swisscom and the Swiss Federal Office of Communication, OFCOM (BAKOM). The Business Excellence (BSE) unit, which is responsible for compliance with safety and quality standards at cablex, also carries out regular spot checks.

09.08.2021
Author Carolin Rabea Primerova

Swisscom mobile communications acceptance inspections.

When the construction measures on a mobile communications antenna are completed, the installation technicians carry out a self-check based on a checklist using the dual-control principle. This is followed by an additional cablex internal check by the project manager(s) or the site manager. The new mobile communications antenna in Bellikon was put to the test by Severin Brandenberger, site manager of the Wireless unit, and the quality manager Kurt Eggenberger. For reasons of work safety, work on a radio mast must always be carried out by two people.

Site manager Severin and quality expert Kurt check whether the new mobile communications installation complies with the construction specifications. In doing so, they primarily ensure that the legal requirements for NIR (non-ionising radiation) are complied with.

The NIR test of a new or converted mobile communications antenna is essentially carried out in four steps: 

Alignment.

Special GPS measuring antennas provide information on whether the alignment of the mobile communications antennas has been set correctly. The alignment of the new antennas must not deviate from the construction specifications by more than 2 degrees. If the tolerance is exceeded, readjustment is necessary.

Tilt.

The mechanical tilt is measured in addition to the alignment of the antenna. During this check, the tilt of the antenna is checked with the help of a digital spirit level. If the tilt does not correspond to the specifications, this leads to slow data transmission and poor voice quality in the customer network.

Height.

The height of the antenna is measured in a third step. If the height of the antenna deviates from the planned height by more than 10 centimetres, the NIR specifications are not satisfied. By the way, the highest antenna mast is located on the Jungfraujoch at an altitude of around 3450 metres.

Antenna type.

“There are many different types of antennas,” explains Kurt Eggenberger. This testing step checks whether the correct antenna has been installed, because there are many different antenna types with differences in their transmission power and transmission frequency.

Other quality and safety checks.

Kurt and Severin also check the earthing and lightning conductor of the mobile communications antenna. A torque wrench is used to check whether the installation of the high-frequency antenna cables complies with the specifications. In their check, the site manager and quality manager also make sure that the antenna brackets are fastened to the mast correctly.

 

 

For work safety, it is important to make sure that the climbing protection system is installed correctly. This means checking the access barrier, as well as the Söll guide rail, and the DIN-certified anchor points.

The mast and the area around the system must be secured against entry by unauthorised persons.

The site manager transmits the entire documentation of the safety inspection to the Swisscom database. As soon as the documentation in Swisscom's system is correct and complete, Swisscom then initiates its own acceptance check. The cantons also carry out random checks to monitor compliance with their legal requirements. OFCOM monitors and controls the entire process.

Wide-scale migration launched at Coop.

57 cablex technicians at work for Coop.

Kabelzug

Traffic light system must make way for new bicycle tunnel.

In order to build the ramp to enter the new bicycle tunnel, a control unit for the traffic lights at Zurich's main station must be relocated.

Safety training in beautiful Grisons.

Internal safety training was held again last week in Meiersboden, Canton Grisons. The beautiful autumn day and the location close to the Grisons mountains were an additional invitation to do practical exercises outside.

Transport.

Creating a future-proof infrastructure with cablex.

Half of PTP distribution box gutted by fire!

Burnt out PTP distribution box was quickly brought back into operation.

Buildings, meeting spaces and training areas networked from A-Z.

Building antennas is a core skill for cablex.

Local exchange in Geneva-Monthoux dismantled after 35 years.

In June 1987, TDM equipment (time-division multiplexing) was installed in the Swisscom local exchange in Geneva-Monthoux.

smart cablex.

In our Smart Building, Smart City, Smart Construction and innovation, we implement innovative and forward-looking solutions for you.

cablex Academy.

The cablex Academy teaches specialist skills (competences) in the fields of network construction, service and installation. Here, focus is on the area of network construction for telecommunication.

Techniker installieren Display

cablex realises ICT installation in Swisscom's Retina shops.

In 2022, the ICT project management of cablex Field Services realised eight shops in the regions Zurich, Frauenfeld and Rapperswil.

New image film – Passionately facilitating the networked world!

In the new image film, the biggest professional challenges of four employees show why the work that we perform so passionately is so important

cablex AG

Tannackerstrasse 7

3073 Gümligen

cablex.info@cablex.ch

0800 222 444