[time-nuts] Optical time sync

[Tom Van Baak]

> Now these are quite impressive but what really caught my eye was one
>> with a Garmin hockey puck GPS antenna on top of it, I thought 'what's
>> this?'  I inquired of the sales rep lady at the booth and she informed
>> me that beacons for wind farms are required to have sychronized beacon
>> lights.
> 
> Neat hack.  Thanks.
> 
> I assume a GPS on top of a windmill has a great view of the sky.  How much 
> trouble do they get from multi-path off the blades?  Are they metal or 
> fiberglass?

I wonder if the blades also are in sync, either amongst
themselves, or with GPS, or with the power grid frequency.

/tvb