[Titanscape (OP)]

Can we use a satellite dish, to send messages, to old defunct satellites, to switch them on, and use them in a toying way?

They stay up their as space junk for a while, still in tact, solar cells and all, just in wobbly orbits.

[LeeE]

I expect the two main problems are lack of manuevouring fuel and deterioration due to the cosmic ray bombardment.