EchoLink ® software allows licensed Amateur Radio stations to communicate with one another over the Internet, using streaming-audio technology. The program allows worldwide connections to be made between stations, or from computer to station, greatly enhancing Amateur Radio's communications capabilities. There are more than 200,000 validated users worldwide — in 151 of the world's 193 nations — with about 6,000 online at any given time. The program runs on Microsoft Windows ® . It is offered free of charge and may be downloaded here . EchoLink is a full-featured software package with many important and useful features. For a brief overview, take a tour ! For more information about Internet linking programs such as EchoLink, see QST for February, 2003, page 44, or download the PDF from the ARRL Web site. Windows XP Service Pack 2 Information