I missed the point in the article where he explains that. I may have skimmed past it, but one of them makes that quote in the last paragraph. Does shortwave spew carbon based fuel emissions when it transmits? I figure it is a comparison to the potential efficiency of digital broadcast vs. analogue.
Good article overall!!!
Good read. Thanks John.
I suspect that the environmentally unfriendly bit is a reference to the rather large antennas required to reliably transmit internationally.
I remember a story from several years back about people in Rome, Italy, complaining about health hazard from the high power transmitting antennas of Vatican Radio which are located in populated areas.
That's why the longwave radio tower in Warsaw, Poland -- once the tallest in the world -- was never rebuilt after it fell down in 1991. The local farmers complained that the radiation had affected their health.
https://en.wikipedia.org/wiki/Warsaw_radio_mast