[heero_yuy]

I don't see the analog radio broadcasts being turned off if ever by the simple premise it is easy to build analog radios and transmitters in a post apocalypse world.

The bandwidth occupied by the current radio broadcasts is less than 50MHz compared to the GHz of the rest of the spectrum. There is simply no reason to try and re-use this.

DAB is a failure by the simple reason that the codecs were obsolete even when the broadcasts started and there was/is no way to update them from the transmitted stream unlike the PC / smart TV codecs that are simply downloaded when a new standard is released.

Plus compared to decent FM the quality is abysmal. Bandwidth / bitrate is all.