ARLA/CLUSTER: Interferencias de radares meteorologicos na banda de 5, 6 GHz.

[João Costa > CT1FBF]

Wireless networking blamed for permanent rain belt

New Zealand's RSM report that recent investigations of interference to
the MetService weather radars, causing apparently permanent rain belts
to show on the display, indicate most problems are arising from
wireless networking service equipment in the 5.6GHz band.

The Radiocommunications Regulations (General User Radio Licence for
Short Range Devices) Notice provides for use of wireless networking in
the 5.470GHz to 5.725GHz band (which includes the C-band radar
systems) with special conditions required to minimise the possibility
of interference to radar services.

Interference investigations and auditing shows that some equipment
users are not paying attention to those conditions and not ensuring
compliance.

As radar services in this band provide important information in regard
to weather and atmospheric conditions (including wind shear at
airports) it is essential that they can operate without interference.
Users of non-compliant wireless networking equipment may expect
attention from RSM Radio Inspectors.