Can you broadcast in all frequencies?

While looking a some VJ clips as a bit of inspiration for an upcomming gig, I came accross this video(0:05 is the important bit)-

Electic Method Jean-Luc Picard

Is it possible to broadcast in all frequencies?

I know when I go through the Dartford tunnel they have a system that enables the tunnel operators to communicat via the cars FM radio, so perhaps the same princelple.

But to cover a big range seems quite a chanllenge. It could probably be done sequentially, but in one go?

Maybe a morse signal would work.

Anyway, just an off topic thought.


Morgan. 2E0IRE.