ARLA/CLUSTER: Lampadas de LED´s podem causar graves interferências nos sistemas de radiocomunicações

[João Costa > CT1FBF]

Loggers suffer LED lighting interference

New Zealand's Radio Spectrum Management (RSM) has identified serious
cases of interference to radio communications at log hauler sites in
Marlborough from the operation of vehicle mounted LED lighting

The interference is so severe that in darkness hours radio systems
have become inoperable. Site management called RSM to look at the
issue due to serious safety concerns.

A common solution was to separate the lights from the radio antennas
as much as physically possible.

A recent audit of emergency lighting suppliers was undertaken by RSM
and it was generally found that suppliers were not aware of the need
to ensure their equipment met the necessary EMC specification AS/NZS
CISPR15.

A further finding was that various other electronics fitted to the
diggers and haulers caused radio interference. In this case most
instances of interference can be minimised by placing the radio
antenna centrally on the cabin roof.

RSM urges users to ensure they pay attention to the separation of
antennas from other electronics and only fit approved AS/NZS CISPR15
LED lights.

Radio Spectrum Management
http://www.rsm.govt.nz/cms