There is a picture of the wind generator that was used to power all of the radios on the K4T Dry Tortugas dxpedition up on my webserver.
Yeah! Glad to see some progress in Ham radio. The worst thing about Field Day is the noise of all the generators. And that is just so 1960's! The price of solar has dropped by 50% in the last few years to below $2 per watt, even $1/W for big (seconds) panels and a 400W wind turbine is less than a $1 per watt and so clean renewable energy is becoming very economical.
Reliance on generators and Gas is the worst and most short sighted form of emergency preparedness. It is estimated that the real cost of a gallon of gas delivered to a remote comm shelter in Afghanastan can cost as much as $400/gallon due to the overloaded logistics requirements to get it there. Same goes for a hurricane or earthquake ravaged area. Once you burn up your can of gas, there is no more and you become part of the problem, not the solution. If you have any sun on your property, consider using it. I'm fighting my own city-hall to use mine... http://aprs.org/alternative-energy.html
Bob, WB4APR