Kamov Ka-26 geographical survey helicopter with electromagnetic pulse generator.
https://diqn32j8nouaz.cloudfront.net...y_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...312#post218683
https://www.homemadetools.net/forum/...381#post181482
https://www.homemadetools.net/forum/...713#post159551
https://www.homemadetools.net/forum/...197#post157801
https://www.homemadetools.net/forum/...277#post134903
