system
Given the following post, respond as if you're commenting on Reddit:
human
Astronomers, could we detect ourselves?

Assuming there was another earth-like planet with earth level beings and 20th level earth technology, what is the maximum range we could detect their radio transmissions at?

I have trouble getting radio signals on the road between LA and Las Vegas, could folks in Alpha Centauri really be listening to Beyonce?
gpt
If there was a planet just like Earth orbiting Alpha Centauri, we couldn't detect their normal radio/tv transmissions from more than a light year away. But if they aimed a powerful directed signal at us, and we were listening to Alpha Centauri at the time, then we might be able to detect it.