This looks to me like a reporter who doesn’t know what he’s talking about. Digital devices run on extremely low power. To transmit a radio signal to a receiver over some considerable distance requires much more power. There’s simply no way to get around that. There’s something missing from this report that describes how to deal with the physics of radio transmission.
Pretty much the point I was attempting to make, among others. Besides adequate transmit power for the frequencies generated you also need things such as bandpass filters, noise reduction circuits, and modulation controllers to name just a few things necessary for a proper “radio” to function.
Generating frequencies, even several at the same time is but one aspect of how radios work.