It is happening for just a while but it is happening Fast!
The new digital radio technology has come to market and it is reasonably cheap and accessible.
There are many applications one can use for the benefits the survival community, like AES encryption for $100, and Digital/Analog interoperability.
But that is the tip of the iceberg, there are many interesting options, so take the time to watch at least the first video.
And do not forget, it is rarely the tools, it is the user that makes them of worth.