Vehicle mounted LED lighting is causing severe interference to radio communication equipment at a log hauler site in Marlborough, New Zealand. Management at the worksite contacted Radio Spectrum Management (RSM) to report that their radio communications become inoperable at night.
After investigating the incident, RSM discovered that emergency lighting suppliers were not aware that their equipment was required to meet the EMC specification AS/NZS CISPR15. RSM also discovered that other electronics in the diggers and haulers were also causing radio interference. The agency recommended that the radio antenna be placed in the center of the digger and hauler cabin roof to minimize interference.