I would love to set up a real managed digital network for hams, with stuff like roaming and the like. But I'd be more interested in technologies that are one t

I would love to set up a real managed digital network for hams, with stuff like roaming and the like. But I'd be more interested in technologies that are one to many rather than the one to one calls on mobile phones. Open public channels keeps the ham community connected. Something like DMR Tier 3 or Tetra would be great.