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SafetyConsult
May31-11, 01:40 PM
Can anyone explain why cranes in construction sometimes experience induced currents from antennas radiating from distances of up to several Kilometers.

I have looked into the phenomenon several times, and have not been able to find a study or baselines to follow. I have a basic understanding of how it happens (antenna theory and reradiation), but not a solid proof. Can anyone point me on the right direction.
Quinzio
Jun1-11, 01:49 PM
Can anyone explain why cranes in construction sometimes experience induced currents from antennas radiating from distances of up to several Kilometers.

I have looked into the phenomenon several times, and have not been able to find a study or baselines to follow. I have a basic understanding of how it happens (antenna theory and reradiation), but not a solid proof. Can anyone point me on the right direction.

What does it mean to "experience induced currents" ?
A crane could be thought as a long antenna resonating at certain frequencies, but the currents are indeed really small.

Even my body now is experiencing some induced currents due to 50Hz currents circulating in the cables.