"m II" wrote in message
news:Atbbd.36945$663.20268@edtnps84...
Al Patrick wrote:

Just out of curiosity, how would that stop those of us with
shortwave radios from tuning into foreign newscasts and finding
out what's going on?


Therein might lie the key!


Is this why the broadband over powerlines is getting all set to ruin
reception?

It creates broadband noise in the vicinity of power lines.

What about the new digital broadcast technology? You need a subscription.

Depends. IBOC, the digital capability being added to AM and FM in the US, is
free.

Satellite radio subscribers have addressable receivers which store
activation data and update it off the air. There is no key card.

If it's an encrypted key card used, then it's an easy matter to trace who
is listening to what...just like the IP control numbers of your web
cruising.

Nope. Satellite radio is one way, and only receives.