7. HAM Radio
An estimated six million people are still involved with this hobby that began at the start of the 20th century. HAM radio operators communicate with each other over short wave radio. HAM radios have been featured in many popular movies, including The Shining and Contact.
8. Reel to Reel
The first tape recorders were reel to reel and were the preferred technology for professional sound designers until digital formats rendered them obsolete.