Previous Business Updates have mentioned problems arising from WiFi installations affecting the NZ Meteorological Service rain radar. A recent investigation of issues affecting the Wellington radar showed that the problems are not restricted to land-based WiFi systems. In this instance the source was determined to be equipment operating on a vessel voyaging in the Cook Strait.

Installations of marine-based WiFi services are becoming more common (and more complex). Installers and users should be aware that the requirements applying to land-based services also apply to vessels in New Zealand waters, and should take care to prevent interference.

Read more about Wireless LAN and Related Systems in the 2 GHz and 5 GHz Bands.

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A noted characteristic of interfering radio signals is that they have a lot in common with toothache – when someone is in position to examine the problem, it temporarily disappears.

Advances in computer-controlled receiver technology and in the capability of cellular networks have enabled RSM to successfully trial remote-control of a radiocommunications receiver, enabling detection and measurement of radio signals at a distance.

The Radio Inspector no longer needs to remain in the vicinity of the receiver, which can be set up to record signals or to provide real-time monitoring, with control of all receiver parameters from a distance. This provides new efficiencies, particularly in regard to reduced travel, and the opportunity to investigate radio signals. RSM is looking to extend this ability over time.

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