The IRLP Network has almost 1500 Nodes and Reflectors available in around thirty countries around the world. Each Node and Reflector has a 4 digit number assigned to it. If you are a licensed Radio Amateur and their is a node in your area then you are able to place a call to any other node or reflector using DTMF. Nodes can be on a repeater or simplex, usually on 2M or 70cm but can be found on other bands also so if you have a Foundation licence be very careful where the distant node is.
Reflectors allow many nodes to connect to each other and often used in emergency situations in other places of the world. When there is a Space Shuttle Mission in operation audio between the shuttle and NASA is broadcast on a reflector as well as many other activities like field days, JOTA and regular scheds.
The Yarra Valley Amateur Radio Group has established Node 6414 VK3YVG, at present it's coverage is limited but it is hoped that it will eventually cover the entire valley. Any licensed Radio Amateur is welcome to use the Node and they do not have to be a member of the YVARG. It is however a licence requirement to identity with a callsign before transmitting DTMF over the air and it important to pause between overs to allow the links to reset, especially if accessing a reflector which could have numerous nodes connect.
Anyone requiring assistance to use Node 6414 can either call on the Node frequency or the club's 2M repeater VK3RYV, 146.725 MHz and hopefully a club member will be availabe to help. Alternatively for further information contact irlp@yarravalley.ar.org.au