This weekend is Amateur radio field day. This is an annual exercise (in the US and Canada on the fourth full weekend every June) to have radio operators out in the field testing their emergency responsiveness. It is also a contest to see how many contacts can be made in 24 hours under emergency conditions (usually).
This is the most popular annual on-the-air event with more than 35,000 radio amateurs operating from remote locations.
Some people think that the Internet has killed off this hobby, but Amateur Radio growth in the US continues to soar. At the end of 2014, the total number of radio amateurs in the FCC’s Universal Licensing System (ULS) database reached an all-time high of 726,275.
As I tell people fairly regularly, this is one hobby where there are multiple dimensions left to explore. No matter how knowledgeable you are about HF, Digital, Satellites, electronic building… there are always new areas on the horizon. There are numerous podcasts and vlogs out there to learn more.