CONFIRMED! The pyramids have an alternate function!
My pyramid theory is like this..
If it were indeed a transmitter..
It would most likely be a residual particles beacon..
There is probably a particle in the universe (tachyon) not yet understood by humans, which has been infused into the sandstone blocks of the pyramids..
And the Aliens had the pyramids built, so that they can find us millions of years later, after they've seeded the planet with life..
More generally, it's like a reflective sign..
The aliens, in millions of years will use their tachyon radar, and pulse our general area, when it hits the pyramids, it will glow on their screen.
Then they come and either enslave us, eat us, maybe challenge us to Vidya, who knows..