• Call Today: 01484 483030

Case Studies

 Home / Case Studies

NEC Microwave Link I&C

Case Study:
Upgrading existing microwave links in London and beyond


Project Overview:
With the ever increasing demand for mobile data and new 4G services, particularly in London, mobile operator MBNL was increasing its backhaul transmission bandwidth by swapping out old microwave links for new link technology from NEC. NEC asked Merlin Wireless & Fibre Services to carry out the installation, migration and decommissioning services on site.


A Pre-Installation Visit (PIV) was carried out to determine the requirements of each end of the link. For example, what materials were to be ordered and if specialist access equipment was needed.  The office team made all of the necessary site access arrangements and raised the network outage permits.

As part of the swap-out process, the teams installed new Indoor Radio Units (IDU) and microwave dish antennas at each end, panning them in to a achieve the specified Receive Signal Level (RSL). The equipment configurations were set and live network traffic was migrated on to the link and then the sites were successfully brought back on air. The old legacy microwave equipment was decommissioned and removed from site.


From an initial batch of 50 links successfully completed in London, the project was extended further to several hundred links - not only in London, but in the wider south of England also.

Key Facts:
Client: NEC
Services covered: Rigging, Installation & Commissioning
Summary of key works:


  • • Carry out Pre Installation Visit
  • • Arrange permits and access
  • • Install new microwave antenna and radio units
  • • Test, commission and migrate traffic
  • • Decommission legacy equipment
  • • Compile and submit handover documentation

Date: 2014 - 2016