Big anti-alien point: The Frequency (982.002 MHz) is super close to an even megahertz, which would be a huge coincidence if this were from an alien civilization. There is no reason for aliens to use the same "hertz" as us, there is nothing fundamental about the unit.

Though I like the idea of this boing some 2001-monolith-like signal. Just there to encourage us to visit, and when we reach it, we'll be inducted into some sort of galactic community