As it's name implies, the Internet Radio Linking Project makes use of the Internet as a communications backbone to facilitate Amateur Radio communications. With this technology, we can provide instant, on-demand linking with one or more repeaters worldwide. The Internet Radio Linking Project (IRLP) allows amateurs to link radio systems separated by long distance without the use of expensive leased lines, satellites, or controllers.
IRLP allows communications using your HT, mobile or base FM transceiver to any location in the world that has an IRLP node.
All local (and linked) users will be able to participate in an IRLP QSO via the Internet to any place in the world where a node exists through a reflector (a group, or party line) or node-to-node (single point-to-point) connection.
IRLP is the brainchild of Dave Cameron, VE7LTD of Vancouver BC. IRLP is the abbreviation used for the Internet Radio Linking Project which Dave developed over the past several years. In 1998 Dave became frustrated with the unreliable operation of the Windows based Voice over IP software. All Windows based amateur linking software used VOX and were not secure from non-amateur access. The IRLP network uses a digital switching concept and produces an instant and secure link between licensed repeaters around the world. The hardware and software is constantly being upgraded and enhanced with new features.
But is it DX?
No not really, it doesn't have the challenge of sending your signal around the world! It is often referred to as "armchair DX" because it's so easy. However it is not DX by any of the traditional definitions. While you may have conversations with stations around the world, your radio signal is only traveling as far as the local repeater. Contacts made do not qualify for any awards or Field Day with the ARRL. Most stations will not send QSL's for IRLP contacts, although some are using electronic QSL's (visit http://eqsl.net/qslcard/). Although not DX, it has some of the flavor of working DX! You may be talking with stations in different countries, time zones or hemispheres. It simply is a way to expand our reach using the Internet. So if you like to ragchew, this is a way to reach more hams. So please put this in perspective and enjoy it for what it is!
IRLP versus other linking systems
Unlike some systems that allow users access from a PC with minimal if any security, IRLP uses a 100% authentication system (PGP) to assure the connecting nodes are authenticated and authorized to transmit on the amateur bands. This provides security from hackers and non-amateur PC access. Although the IRLP uses the Internet., it maximizes radio activity. The philosophy behind IRLP is to require a radio at each end of a connection.
There are other systems that can be used to link Amateur Radio operators using Internet Voice over IP technology. If you are one of those who would rather sit in front of a PC and talk talk to other like minded users, please check out the other systems.
IRLP has a different implementation philosophy from other Internet. linking systems.
IRLP
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Others
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Similarities between IRLP and other systems
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It is our opinion that the nature of the IRLP system, where a radio must be used at both ends of the contact, helps promote Amateur Radio. No computer, special equipment or software is required by the end-users, all you need is a radio! The fact that it runs on a more reliable operating system was key in our choice of the IRLP system.