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Overhead wire marker

Markers identifying overhead lines to aircraft From Wikipedia, the free encyclopedia

Overhead wire marker
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Overhead wire markers are safety instruments applied to the overhead power lines marking transmission lines and ropeways along the flight path during the day.[1][2]

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Markers on a line near an airfield
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A spherical marker. Spherical markers are also known as aerial marker balls.

Markers are often installed on overhead lines near airfields, or at river crossings where there is a possibility of seaplanes using the river. Some markers contain conductor marking lights or strobe lights to improve visibility at night or in fog.

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An overhead line obstruction warning marker near an airstrip.
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See also

Notes and references

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