Commpact
When was the last time you called someone in another state? How about another country, on another continent? How many miles away is that? Communicating over these long distances results in long (meters long!) antennas and cumbersome systems that not only take up space but require substantial labor and resources to build. While this works just fine on land, it does not translate well to all platforms of communication. For example, how can you implement those systems in the air for aircraft? What about on the ocean for naval ships?