[toast0]

Isn't that just a microwave oven, more or less?

[firtoz]

Just need to amplify it 10000 times

[RajT88]

So - I know folks who have mulled over attaching the emitter of a microwave oven to a parabolic 2.4ghz antenna (indeed, same spectrum).

It would be cool... For anyone who does not want children one day.

[userbinator]

Or 40dB. This is why those working with RF use dB --- power varies by orders of magnitude between the transmitter and receiver.