The Internet Movie Radio Database
From Internet Movie Radio Database
Two-way radio communication
This website is dedicated to Amateur ("Ham") Radio and other types of two-way radio communication products found in movies and television shows.
If you are new to the site and would like to contribute, please refer to the new users page.
Two-way radios have been used for a lot of different entertainment, emergency, and hobby purposes throughout the years, and is still going strong to this day. There are about three million licensed amateur radio operators worldwide with the largest group being located in Japan. It was reported in 1999 to have over 1.2 million “hams”, with the US coming in second at over 700,000 operators (reported in 2007). On top of being used in the entertainment industry and as a hobby, most would say that amateur radio's primary objective is emergency communication. Even Hollywood recognizes that when everything else goes down, it’s possible that ham radio is still up!
Ham radio operators are required to be licensed by the Federal Communications Commission (FCC) in order to transmit. In order to get licensed you have to pass their tests, of which there are currently three. Broken into classes, each has its own exam and difficulty level. Each class, or element passed allows the operator to transmit farther distances and on even more frequencies. Amateur radio is the only type of two-way radio that is capable of talking all around the world (cell phones are not radios).
Citizens' Band radio (also known as CB radio) is a short-distance, two-way radio communication system using the 11-meter band (frequencies at 27 MHz). It is located very close to the 10-meter ham radio band. Rather than using actual frequencies on these radios, however, they use “channels” to make it more user friendly. They originally came with 23 channels and the operators were required to be licensed by the FCC similar to the ham operators.* In 1977, the Citizens' Band was expanded to 40 channels. Another big change that has taken place is that you no longer need a license to talk on them.
Other types of two-way radio systems are the Family Radio Service (FRS), Multi-Use Radio Service (MURS), and General Mobile Radio Service (GMRS).
* K7TOB Personal Note located on the Talk:The Internet Movie Radio Database discussion page.
- Amateur radio at Wikipedia
- Citizen's band radio at Wikipedia
- American Radio Relay League
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