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by w0de0 124 days ago
It's one balloon, Michael. What could it cost, 10 dollars?
1 comments

A large Mylar party balloon with helium? Yeah probably about that depending on where you are and the balloon type and size.
Yep. It seems like for this application you'd want a larger one, a few feet across, with a nice shiny metal foil coating for the radar to bounce off. So, not a $1 balloon.