Nomad - let me make a constructive suggestion.
In the event that the "grid" really does go down for America, or some part of America, there is going to be a LOT of confusion and anxiety out there. Not to mention very wild rumors (mostly wrong), and people thinking "apocalypse". The public reaction could be an over-reaction, to put it mildly.

It would be trmendously helpful for you short wave guys to figure out how you can transmit some basic news. A lot of people will be listening. A lot. So any news that you send out could go a long way. But emphasize to people the absolute necessity of only communicating the most basic well-established facts ... and absolutely no speculations or conspiracy theories.

In short - you guys could do a lot of good.
Or a lot of harm.
It could cut either way.

No offense to you personally - you've probably already thought about this a bit. It would be very helpful to know what the basic frequencies of transmission will be for your broadcasts.

Pete2