Comment Waste of time (Score 1) 101
Weak signals over a long distance. You may as well try to listen to people whispering in China from the US.
(Why would a civilization dedicate a large amount of resources, say 1,000+ nuclear power plants, to send a very narrow signal into the void hoping for a billion+ to one chance of hitting our little planet at a time we are listing - Not before the Romans or after we're cooked. Engineers start with: how can I send the message with as little cost (materials, power, etc) as possible? If they over engineer, they get fired. "Close" in this context is 10,000 light years. Millions of light years for galaxies.)