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remote node in parallel. That is, you will be heard and communicate with radio
amateurs locally and at the remote node location. At the beginning of each
transmission through a node it is best to press the push to talk (PTT) and wait about
two seconds before talking into the microphone. This is to allow the necessary
switching to be made. When an IRLP connection has finished one of the stations at
either node will transmit the DTMF code "73". This disconnects the link and when
done successfully you will hear an announcement.

IRLP is quick and easy to get into. For more information and a list of nodes look at
www.irlp.net

Figure 40-5 An example of an IRLP system
ECHOLINK

EchoLink is a computer-based amateur radio system distributed free of charge that
allows radio amateurs to communicate with other amateur radio operators using
Voice over IP (VoIP) technology on the internet for at least part of the path between
them. It was designed by Jonathan Taylor, a radio amateur with call sign KlRFD.

The system allows reliable worldwide connections to be made between radio
amateurs, greatly enhancing amateur radio's communications capabilities. In
essence it is the same as other VoIP applications (such as Skype), but with the
unique addition of the ability to link to an amateur radio station's transceiver. Thus,
any low-power handheld amateur radio transceiver which can contact a local
Echolink node (a node is an active Echolink station with a transceiver attached) can
then use the internet connection of that station to send its transmission via VoIP to
any other active Echolink node, worldwide. No special hardware or software is
required to relay a transmission via an Echolink node.
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