Okay, I’m still here. Your radio signal system sound like the “A for Andromeda” signal.
Soppose you had copies of your library and some small solid-fuel rockets. It would probably be easier to emit some regular signal at long intervals, and listen for the same signal echoed back at you. If someone did that, you could send a rocket to the place the signal came from. I would imagine you could harden electronics and keep them underground. If a solid-fuel rocket degrades, as it might, you could use some sort of electromagnetic acceleration.
Why would someone point their radio antenna at the moon, anyway? We might want to generate a very broad band signal, such as a spark pulse, which would show up on most wavelengths. Maybe we direct our signal at points where radio waves are coming from.
How do we generate the electricity? There’s plenty of solar power, but my gut says that the cells would be damaged by the radiation. There are no tides on the moon, as its rotation is locked to the earth. I am tempted to go for some sort of nuclear process, as you can get energy from isotopes with half-lives of millions of years. If you can store it and let it go all at once, you don’t need a lot of power.
Hmm. Don’t think we are there yet. Ideas?
