[amsat-bb] Is it 100% impossible to work a satellite below the horizon?

[Bill Dzurilla]

I was giving a presentation at our club meeting called Working DX on the Satellites and afterwards someone had a good question: is it at all possible that tropo, skip, or other form of enhanced propagation can enable a contact via a satellite below the horizon?

It has never happened to me.  Has it ever happened?

73, Bill NZ5N