60km long sender antenna (or rather just its feedline) with its own powerplant, transmission speed of a few bits per minute, Earth-wide coverage - that's just t

60km long sender antenna (or rather just its feedline) with its own powerplant, transmission speed of a few bits per minute, Earth-wide coverage - that's just the exact opposite of the everyday miniaturized low-powered short-range high-tech gadgetry... incredible stuff.