Frequently Asked Questions

What is GPR?

GPR operates using FM-frequency radio waves that are actively transmitted into the ground using a transmit antenna. As the GPR pulses move through the material (at just under the speed of light), small differences in electrical properties of materials result in reflections being returned to a receiving antenna. As the transmitting and receiving antennas are moved across the ground surface, we obtain a cross-sectional view of the subsurface.

It is very similar to the way that fish finders work, except that it uses radio, where fish finders use sound. In both cases, the return signal is timed very accurately, and the echoes are translated, and displayed visually, in a form that trained users can then interpret.

How quickly can you respond to an emergency need?

In most circumstances, we can have a technician on your site within 24 hours.

Why would I choose RADAR over another similar company?

You would be hard pressed to find a similar company. The few companies in New Zealand that do provide GPR services use GPR as a supplemental source of revenue. RADAR Ltd uses it as its only source of revenue. We are using the technology on different projects every single day and we have established a reputation for providing a reliable and value added service.

Who should call RADAR to locate underground services?

Anyone digging with machinery in public road reserve, parks, domains or private property.

Why should I call RADAR before excavation?

Underground services are present almost everywhere. Damaging them can cause great disruption to utility services and repair can be costly and time consuming.

How does the location service work?

RADAR will source plans of the underground services, they will locate the services using GPR and electronic equipment, they will mark the location of the services on the surface of the ground and if required they will record the position of the services on the appropriate drawings.

Why should individuals or companies planning to excavate have to spend time and effort in locating underground services?

The time and effort spent avoiding just one instance of damage could save thousands of dollars and avoid isolating thousands of people from vital services. The location of underground services on any site needs to be considered during the planning stages of every project.

Are underground network services installed in a straight line ?

Not always. Many services have bends, loops, offsets and laterals. The depth of services can vary greatly also.

What is the maximum distance RADAR will travel to perform your work?

In the past 12 months, we have worked New Zealand wide. We are willing to consider any project location.