Ham Radio (or Amateur Radio) is a licencsed activity permitting use of the airwaves for communication of all types. There are many different facets of Ham Radio, from talking using voice, to exchanging e-mail messages or files, to exchanging streaming video or using other digital communciation modes. Ham Radio is used by people all over the world.
Unfortuantely, many are not even aware of this hobby. The Internet gets all of the time. and attention of most people interested in technology today. In fact, one person I know referred to Ham Radio as “old man Internet.” Well, there may be some truth to that but ham radio is the Internet without spam, porn, or any type of commercial activity. It is a great way for people to learn about, and experimaent with wireless communications of all sorts.
Kg3v Ham Radio Blog 
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