Through a technique called Internet linking, ham radio operators are harnessing the immediacy and portability of radio communication to the global reach of the Internet. Today's radio amateurs are using the Internet as the relay between their radio base stations, handhelds and mobile transceivers for long-distance communication, spanning thousands of miles. The ARRL has released a second edition of VoIP: Internet Linking for Radio Amateurs, the complete guide to several of the most widely used Voice over Internet Protocol (VoIP) systems used by today's radio amateurs, with particular attention to EchoLink and the Internet Radio Linking Project (IRLP).

The book is designed for beginners, as well as those hams who are long-time VoIP users. If you're new to VoIP, you'll discover information on how to get started, set up and use these systems. The more advanced ham will find plenty of technical "meat" to dig deeper into VoIP applications and discover how they actually work.

Written by EchoLink creator Jonathan Taylor, K1RFD, VoIP: Internet Linking for Radio Amateurs is available for $21.95 from the ARRL Web site. Order your copy today!