About 10-12 years ago, I bought a detector called Spybuster. I just found it while cleaning out my garage. It is missing the power cord and manual.
This unit alerts you to hovering airplanes. When I bought it, there was a lot of airplane surveillance in my state and it saved my several times.
Have any of you heard or know about this product? I have searched the net with no results. I'm sure the company who made it don't exist anymore, but I was trying to get a power cord and manual.