"Aztech" wrote in message
...

Satellite radio does every thing DRM promises.

... if you're in the US, which doesn't include 95% of the world.


Az.



I think there's direct broadcast satellites serving areas outside the US.
The cost of satellite receivers is a real concern, but it's also a concern
for DRM. Anyway, the international broadcasters could get together and put
up a few direct broadcast satellites, if they really wanted to make the
investment.

DRM doesn't really get around shortwave's reliability problems. The
shortwave utility bands used to be filled with digital signals 25 years ago.
These signals were highly reliable. If there was any propagation at all,
they would get the message through. Despite having high power shortwave
transmitters, selective and sensitive receivers, highly directional
antennas, sometimes the message didn't get through. There's now only maybe
10% the utility traffic there once was. The balance, plus the whatever
expansion there was, went to satellites.

The utility stations wanted 100% reliable communication. They ditched SW.

Frank Dresser