IRLP,…  What Is It?
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 IRLP stands for Internet Radio Linking Project. In the simplest terms, IRLP allows hams to connect their radio signal through a repeater to the internet. A repeater is an electronic device that receives a signal, amplifies it and then retransmits it so that the signal can cover longer distances without degradation. IRLP uses a Voice-Over-IP (VoIP) software to convert an analog audio signal to digital. This signal is linked to the internet through a computer, which carries it to another computer which is identified by a node number. This node then converts the digital audio signal back to analog and retransmits it through another repeater. Using the IRLP allows hams to make contacts all around the world through the combination of ham radio and the internet. For example, a ham radio operator drivng around in their vehicle in downtown Toronto, could have a nice QSO with another ham in Australia or Germany simply by connecting to an IRLP node in one of those countries. A list of node numbers is available on the IRLP web site. Below is a short video example of a ham operator in California talking to another ham operator in New Zealand using IRLP.
Using the IRLP
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