What is this? (power line equipment)

Hello,
Can somebody help me identify the device marked on this picture:
http://avtanski.com/tmp/power1.jpg
Thanks,
- Alex
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On Tue, 10 Jan 2012 14:22:42 -0800 (PST), Alexander Avtanski

Alex,
That's a stockbridge damper, used to control wind driven osciillations on the line.
ET
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Thanks!
- Alex
wrote:

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wrote:

Damn, all this time I though they were to bat the squirrels off the power lines.
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