Earlier quoted context omitted.
> First things first, you have to get your hands on actual VPN software and configs. It would be nice if one of the big shortwave operators could datacast these packages to the world as a public service.
The problem is the countries, which censor Internet and block VPNs, also jam shortwave radio signals.
Seems like it was used way back in the cold war (and even then not blocked/jammed) and I'd guess that current authoritarian regimes would perhaps not bother considering how few could use it.