As psoted above, what kind of range can I expect on 900 mHz, portable to portable, using 1 watt on each portable? Yeah, I understand that range varies depending on the terrain, atmospheric conditions, etc., but in the real world, what can I expect? How would it compare to FRS/GMRS/MURS in the city, in rural areas, on a cruise ship, etc? I assume it is ALWAYS better than FRS in any case. I suspect 4 or 5 watts MURS always wins out in the woods, but what about 4 watts GMRS vs. 1 watts 900 MHZ? Does 900 win on a metal cruise ship? Does GMRS win in an area somewhat less obstructed?