2. The Internet Radio Linking Project
I.R.L.P.
Presented to the
Del Norte Amateur Radio Club
April 1, 2013
Christie Lynn Rust
WA6ZDO

3. Del Norte Amateur Radio Club
Open Repeaters: (Regional Communications)
tone, located in CC, 9th and H Streets
tone, located above Gasquet on French Hill
IRLP System: (World Wide Communications)
simplex with tone. Located at the home of WA6ZDO, near the end of 9th Street and Brother Jonathan Park. Radio operates at 10 watts, with the antenna at 25’
Our system is on all the time!! Talk to the world!!

4. What the heck is I.R.L.P. ?
IRLP stands for Internet Radio Linking Project, and was the brainchild of Dave Cameron VE7LTD of Vancouver BC.   Dave wanted to connect together two distant amateur radio stations, using the internet as a conduit. Cool idea, huh?
Now you can sit on the beach with a handheld and have a conversation with someone in South Africa!!

5. ….. A bit more info
Dave wanted to communicate from British Columbia to Nova Scotia. After many attempts, in 1998 the IRLP network was born and is now growing by leaps and bounds.
IRLP allows the linking of two or more radios together using Voice over IP technology (VoIP) where the analog radio audio is converted to digital IP packets and sent over the internet. At the receiving end it is converted back to analog audio.

6. IRLP System Designer Callsign: VE7LTD Name: David Cameron
Addr: 4708 CAULFIELD DRIVE
City : WEST VANCOUVER, BC V7W 1G2
Country: CANADA
Home Page:

8. What is our IRLP station composed of??
The IRLP mode requires…
A full time high speed Internet connection
A dedicated computer running Linux
Some custom hardware/software inside the computer
A dedicated radio
Each station on the IRLP network is called a NODE and assigned a number. Ours is It’s kinda like a telephone number. The central main server in British Columbia, Canada keeps track of the nodes, and the functionality of the entire system. You just punch in the node number of where you want to go and Vwaahla…. Your voice comes out there!

9. W6HY IRLP NODE #8260, Crescent City, CA

10. Modes of Operation There are two modes of IRLP operation:
1. Point to point (somewhat private)
From your point (Crescent City) to
a specific place of your choosing,
such as Sydney, Australia.
2. Reflector Mode (completely open to the world to listen)
Multiple Audio Streams. Much like a party
line – everyone hears everyone else!

11. Point to Point Mode Crescent City Sydney Simplex 8260 IRLP Server
6366
IRLP
Server
Simplex

12. Reflector Mode North Carolina RPTR Canada RPTR RPTR United Kingdom
Texas
RPTR
RPTR
Australia
IRLP
Reflector
Hawaii
California
RPTR
RPTR
Win System Reflector 9100

14. How do I operate this mode?
In Crescent City, tune your radio to simplex with a Hz tone.
Look up on the internet at irlp.net and find what city or place you want to make contact. If you have a repeater directory, you will find nodes.
Key your microphone and hit the 4 digit code, then let go of the key
If you are close enough to our local node, you will hear the distant station identify to you! NOW WAIT until the squelch tail drops from the Crescent City node.
Now, key your microphone, waiting one second, then announce that you are listening and that you are in Crescent City, CA. “Hello, this is WA6ZDO in Crescent City, California monitoring.”
Have a delightful conversation. When complete, wait until the squelch tail drops, then hit the numbers 73. That is the code to terminate the link.
Then go try another city!! There are zillions of nodes all over the planet. GO PLAY!!
If you have an questions, call me!

15. Always be a courteous and good operator!
*Pause between transmissions, listen for others * When on a reflector, initially wait 15 seconds before you transmit * Hold your PTT for about 1 second before talking to allow all nodes time to rise * No local rag-chews when on a reflector * Do not kerchunk an IRLP node. They don’t respond like a repeater. Plus, if you are connected to another site, kerchunking causes all other nodes to key up and down * Also, make sure your signal is solid into the node
REMEMBER

16. REFLECTORS… Anything you do on an IRLP reflector can be heard around the world. Listen first, observing how others operate, then give it a try!

17. Listen to Nets on Reflectors!
Round the World QSO
Thursday Swap
Bob’s Bodacious BBQ
WIN System Tech
Radio Satellite
Great Lakes Marine Mobile
WK1RK Kids
Society of Engineers
QSO Party
YL IRLP/Echolink
Ham Shopping Club
Weather Radio Listeners Newsletter
VHF-DX Group
IRLP Fun
Tailgaters VHF/UHF Swap
Insomniac Net
Worldwide Friendship
Alaska Morning
Australian Truck Drivers
Swedish
Red Cross
Kids Guam International
Slow Scan TV
Say Good Morning
Civil Air Search and Rescue
University
VK Young Amateurs
220 MHz Rag Chewers
Space and Information

18. For More Information Call or email: Christie Lynn Rust, IRLP trustee~
General Information about IRLP
Node Activity & Connection Status
status.irlp.net

19. Thank you! Any Questions?
Now let’s try a demonstration!! Whoohoo

20. Demo
Time!!