Hi Griz
Wish I had kept mine, from what I now know. General consensus has it that these were for weather observation, however by further study, I've found quite the contrary.
They were actually used in weather CONTROL experiments. The government wanted them back, before some knowledgeable soul discovered their real use!
In controlling the weather, it was found out that certain energy frequencies could modulate the weather toward lessening the affect of storms, or worsening the storm. These were actually RF energy transmitters, designed to self destruct their workings in about three hours.