There is a lot of talk about HAM radio or amateur radio amongst survivalists and preppers. As important as amateur radio is I think we get lost in the idea that its our only option. This article does a great job at explaining the benefits of using HAM radio as well as other radio comms. I think that communications that are handheld and between family members or even community members are just as important. Finding the right radios for you is a part of the prepping process.
Its hard to imagine a world without communications or with limited communications. This is because we are flooded with communications options today. In fact, the very essence of relaxation involves cutting off this stream of communications. Right now we are in a time of abundance but that wont last forever. Be ready.