Nevada Amateur Radio Repeaters, Inc

NARRI - INTERNET RADIO LINKING PROJECT (IRLP)

IRLP provides a means to link radio repeaters together anywhere there is high speed internet connection (128 kbs or more) available. The IRLP uses Voice-Over-IP software and the power of the Internet to link repeaters world wide. The system uses its own custom interface board and Linux based software suite. IRLP makes interfacing a  radio system to the world simple and cost effective.

The IRLP runs a large network of dedicated servers and nodes to offer the very best in voice communications. The IRLP Amateur Radio network consists of hundreds of nodes (repeater plus an IRLP computer) across the world, linking them all with a full dynamic range 32 bit audio. Node connections are made with DTMF on a HT or other radio. The IRLP System Designer is David Cameron VE7LTD.

1) Node-to-Node Connections
Direct one node-to-another node or one node-to-many via a connection to a Reflector. Direct connect Node-to-Node is just like it sounds where node "A" connects direct with node "B". In this mode the two nodes (repeaters) are interconnected and no other IRLP connections are possible. While "A" and "B" are connected, anyone attempting to connect with either node A or B will be told by a wave file recording that: "The node you are calling is currently connected to call sign or node number".

2) Node-to-Reflector Connections
The IRLP system has a limited number of servers called "reflectors" that allow for many nodes to connect together for nets, special activities or HF style QSOs. When a node is connected to a reflector it hears all the audio streams that are sent between the nodes that are connected to the reflector. Nodes will come and go freely to the reflectors, however, some node owners will leave their nodes connected to a reflector as a gateway for the local area.

Node connections to NARRI's ten IRLP reflector channels can be viewed HERE
NARRI - IRLP NODES
  FIRST IRLP NODES IN LAS VEGAS, NEVADA

Node 3210 was installed by W7AOR March 22, 2001 as the first node in Las Vegas and first full time VoIP repeater. Node 3290 followed on September 15, 2001 and the Western Reflector 925 was installed December 12, 2001. Many other NARRI nodes have followed.

NARRI IRLP NODES

Control of node connections is normally restricted to NARRI members, public service net control operators and visiting IRLP node owners and control operators. Visitors should E-mail info@narri.org to gain access codes for the NARRI  nodes they want to use. The Gateway to the Western Reflector is open to non NARRI hams to talk to whoever they hear. They may call CQ to obtain a contact.

    CURRENT NARRI IRLP NODES
  • Node 3641 447.000 MHz (-) PL 123 Hz. Gateway to Western Reflector (Open Access).
  • Node 3260 147.000 (+) PL 123 Secondary Gateway to Western Reflector Channel 0.
  • Node 3290 145.370 (-) PL 123 Coverage on I-15 from Jean to Mesquite and East - West on US 95 ¹
  • Node 3194 447.725 (-) PL 107.2 Used to monitor Reflector Channels 7 and 8 that is used for NV Section ARRL  and other Emcom nets ¹
  • Node 3396 146.640 (-) PL 123 Tonopah, NV ¹
  • Node 3705 449.825 (-) PL 123 Mesquite, NV ¹
  • Node 3491 449.750 (-) PL 123 Pahrump, NV ¹
  • Node 3082 441.650 (+) PL 123 Reno-Sparks, NV ¹

    ¹ Nevada Interconnect. See West Ref Map Section of this web site using side button.
IRLP REFLECTOR 925X - THE WESTERN REFLECTOR

The Western Reflector is a IRLP Reflector with ten channels ( 9250 through 9259). It is located in a co-location facility in Las Vegas with very high bandwidth, much more than a T-1. It provides for multi node connections on each channel as opposed to a single node-to-node connection. The reflector allows for the linking of numerous node together for nets, multi node QSOs, and other special uses.

The Las Vegas 447.000 (-) PL 123 repeater is normally connected to the Western Reflector Channel 0 (the main channel) as the local open Las Vegas area gateway. The reflector is online and available 24 hours a day, seven days per week.

Channels 2, 3, 4, 7, 8 and 9 also have Echo link Gateways so that mixed connections can be made. The integrated servers are always connected so users need only connect to the Echo link server or the Reflector channel.  The integrated servers allow for expanded nets that are so important for Emcom nets.  

More information about the Western Reflector can be found Here

IRLP OPERATING GUIDELINES

LISTEN TO OTHERS USE THE IRLP SYSTEM TO GET THE HANG OF IT

    Here Are A Few IRLP DO's and DON'Ts:
  • DO pause between transmissions to let other in or others to enter DTMF command.
  • DO hold your microphone PTT for one or more seconds before talking to allow all systems time to connect.
  • DO pause for at least three to five seconds before talking after the node connects to a reflector to make sure you will not talk over a QSO in progress.
  • DON'T try to make or break connections unless you are an authorized control operator. Those who control must identify themselves as controlling before sending DTMF command tones and return the node to the connection state you found it in, i.e., idle or connected to a node or reflector. Always ask if someone is using the connection before you change it.
  • DON'T rag chew locally on a reflector or on a node connection. When the IRLP system is busy keep QSOs to 5 minutes or less.
  • DON'T just kerchunk the repeater without saying your call (at least on the second kerchunk).
  • DON'T say your, or the other person's, call sign every transmission (only your call is required once every 10 minutes).
  • DON'T repeatedly say, "I hear that" or "roger that" or "QSL" in response to every transmission/comment.
  • DON'T use 11 meter lingo when talking on the system. Speak normally.
  • DON'T shout into your microphone.
  • DON'T give one-word answers or comments.
  • DON'T break in on an ongoing conversation unless you know who all is in it, and you have something meaningful to contribute.
  • When in a QSO with more than two people involved, turn it over to someone by name (go ahead Jim).
  • When you sign clear, turn it over to someone by name or call (DON'T just sign clear because no one knows who should pick up).
  • Use a mike hanger in your vehicle to avoid sitting on the microphone and inadvertently keying up the system with people all over listening to your conversation.
  • DON'T TRY TO CONTROL IF NOT AUTHORIZED TO DO SO OR TALK ABOUT THE CONTROL CODES OR HOW TO CONTROL. That is the business of the node or reflector owner. He will tell who he wants to know. Always ask an owner if you can use his equipment. It should be noted that not all nodes use the same control commands - ask the owner. It is rude to try to control a node if you have not asked first. Just like some repeaters, some nodes are private. More and more node owners are installing passwords to discourage button pushers from trying to operate their node equipment. It is always safe to ask for a control operator when you are a visitor to a node. Vistors to Las Vegas should e-mail w7aor@narri.org to inform NARRI of your desire to operate its nodes and obtain permission and necessary information. Any reasonable request will be honored. Many visiting node owners and users have used NARRI nodes to talk home.

CALL WAITING

You may hear your node is receiving a call from node number 1234 or some other node number. What this means is the node that you are using is being called by some other node and the connection can not be made because you the node is connected some where else. The calling node receives a message "The nodes you are calling is connected to ______". If you are connected to a reflector the calling node can connect to the same reflector to reach you.

ERROR MESSAGES

From time-to-time you may receive error messages when attempting to connect with a node or reflector. The most common ones are:

1) "The node you are calling is not responding." This is caused by a loss of internet connectivity to one end of the call attempt.

2) "BEEP Error The call attempt has timed out, the connection has been lost". The node being called is OFF-LINE. 

3) "The Connection Has Been Lost". If the internet connection drops this error message will be heard.

© Nevada Amateur Radio Repeaters Inc - 2009