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The NEXRAD radar transmits a pulsed signal at 750 kilowatts (peak power). The time-averaged power
(transmitting and listening periods) is about 1500 Watts maximum. If wind turbines are in the main
radar beam and within 600ft of the NEXRAD antenna, construction or maintenance personnel may be exposed to
microwave energy that exceeds Occupational Safety and Health Administration (OSHA) thresholds for
occupational exposure. Within 10 miles of a NEXRAD, the microwave radio frequency field strength can cause
bulk cable interference (inductive coupling) within the turbines electronic controls if they are not properly
shielded. |
