Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Radio World is a trade journal published by New Bay Media targeted at the radio broadcast industry in North America. Sister publications includes TV Technology, Videography, Government Video, TVB, and DV.com. TV Technology is a trade journal covering the English speaking broadcast television industry in North America. The magazine is published semi-monthly with additional issues in April and May. The magazine is published for television industries outside North America as TV Technology Europe and TV Technology Asia/Pacific. The magazine is also published for the Latin American industry as TV Technology América Latina.