The Utah Amateur Radio Club IRLP Node #3352 (W7SP) On UARC's 146.760 repeater -600 kHz offset, carrier squelch

This map shows the transmit coverage of the '76 repeater. - Red areas are likely to provide good HT coverage - even with a rubber duck antenna. - Yellow areas are likely to provide solid mobile coverage and good HT coverage in a good location (e.g. not indoors, or with an outside antenna) - Green and Cyan areas should be easily accessible using mobile or home stations with modest outdoor antennas. - In Light Blue and Dark Blue areas coverage will be spotty and require a good outside mobile or home antenna - even a beam.. - Coverage in un-colored areas is likely to be spotty or nonexistent. Click on the image for large 2000x2000 pixel (1.3 Megabyte) version

UARC's IRLP Node (#3352) is online and available for use!

Important note:

While anyone may "Dial In" to this node, only UARC members will be given the "prefix code" that will allow them to "Dial Out" into the IRLP network.

If you are a UARC member and do not have the access code, it may be found in the printed edition of the UARC Microvolt on the inside front cover, or you may ask a member of the UARC Board.

If you are an out-of-town guest or not a member of UARC, you are welcome to use the node on an occasional basis with the assistance of a UARC member.

This node operates on UARC's 146.76 repeater on Lake Mountain, west of Orem, Utah.  From this site, this repeater covers Utah County, most of Salt Lake County, Cedar Valley, southern portions of Tooele valley, and up into parts of Weber and Davis Counties.

For the procedure for using this node, go to the UARC IRLP Node User's Guide page.  There is also the UARC IRLP Node Quick Reference - a one-page sheet showing the necessary commands - in both HTML (web page) and PDF format (best for printing).

Here are a important things to remember:

• If you wish to talk to someone over IRLP (or any other Internet connection) wait one second after keying up before you say your first word:  If you don't wait, this first word or two will be cut off.
• Speak up - they can't hear you!  If you listen for a short time, you will notice that a lot of people seem to be afraid of their microphone - seeming to want to maintain a "safe" distance from it.  Microphones and HT's are designed such that the user's mouth is only an inch or two away from them!
• If the repeater is linked to another node via IRLP, you'll either hear the IRLP Internet traffic, or you will occasionally hear "IRLP" sent in CW if there hasn't been any traffic for a while.
• At the end of Internet-originated transmissions (from IRLP) you will hear a "di-dit" as a courtesy beep.  (This is an "I" in CW, in case you didn't know...)  ONLY those listening locally to the UARC's '76 Lake Mountain repeater will hear this and not anyone on the other end of the IRLP connection!
• At the present time, BOTH the Salt Lake and Provo Autopatches are offline!  Note that the Salt Lake autopatch on the 449.1 repeater is still active.
• The control codes for the IRLP node are available to UARC members only.  Note that these codes are only needed if you wish to "dial out" to another location.  If you are awaiting someone to "dial in" to you from an "outside" node, no control codes are needed.
  
• Other than listening to the repeater for IRLP-originated traffic or "IRLP" being sent in CW, there is no obvious way to determine if the IRLP node is active:  Please be aware of this when calling locals.  If you wish to have a "local" conversation, please be aware that you may be being heard by a lot of people across the globe!
• There may be bugs:  If you notice something happen that doesn't work as you expect it to, feel free to send an email, describing what happens, to the address at the bottom of this page.
  

IRLP Resources:

• About IRLP:  For more information about IRLP in general, go to the Official Home of the Internet Radio Linking Project page.
• Info about all nodes:  The Node Information page has links to determine the location and status of other nodes throughout the world.

About the UARC IRLP Node:

• Q:  What frequency is this node on?
• A:  This node is on the Lake Mountain repeater on 146.760 MHz (negative offset.)  This repeater has just Carrier Operated Squelch (COS) - that is, it requires no subaudible tone for access.
• Q:  Doesn't this repeater have autopatch(es) as well?  How can you use the patches and IRLP?
• A:  This repeater has the capability for autopatches - available to club members only - that will share the system.  Special control logic has been implemented that will prevent both the autopatch and IRLP system from ever being active at the same moment.  Please note that at this moment no autopatches are online.
• Q:  When I try to connect to a node I get an error message.  What did I do wrong?
• A:  It depends on the error message:
• "Node xxxx is busy..." - That means that someone was talking on the repeater associated with the node to which you were trying to connect.  Try again in a few minutes.
  
• "Node xxxx is connected to yyyy..."  - The node to which you were trying to connect is already connected to another node.  Try again in a few minutes:  You can see if that other node is busy by going to the IRLP Node Status Page to see when it is free - or, if that other node is connected to a reflector, possibly connect to the same reflector.
• "Connection timed out..."  - This sometimes happens for no particular reason - but it usually means that the node to which you tried to connect is offline for some reason, or it could be due to a temporary network problem at the far end.
• "An error has occurred..." - This is a catch-all error message and it usually means that there is something wrong with the node to which you tried to connect - usually a configuration error, but it could, in some cases, be a temporary network problem at the far end.
  
• Q:  Who can use the node?
• A:  Just like for the autopatches, you should be a member of UARC to use the IRLP node on this repeater.  Anyone is welcome to occasionally use the node, either with the assistance of a UARC member, or engaging in a QSO with someone who hs "dialed in" from elsewhere.  If you intend to make much use of the IRLP node, we request that you join the club and do your part to support it.  This seems only fair:  If you use it, you should help support it!  (Of course, those people outside the area that "dial in" to this node are free to do so and certainly don't need to be members!)
• Q:  What about just the repeater, then?  Can I use it if I'm not a member?
• A:  It is OK to use the repeater (minus the autopatches and IRLP node) even if you are not a UARC member:  The patches and node are considered to be perks of membership.  Again, if you plan to use the repeater a lot, it seems only fair that you help support it and join UARC!
• Q:  Can I "link into" the node?
• A:  It all depends on what you mean be "linking into" the node.
• If you simply wish to use the node, you are fine:  UARC members (and occasional guests) are welcome.
• If you wish to connect to this node from another node (that is, get to Utah from somewhere else) then you are welcome to do so.  (And again, the people on the "other end" of the node don't need to be UARC members...)
• If, by "linking" you mean set up some sort of crossband repeater to connect to this node, the answer is no!!!  If this happens, the node will immediately be turned off to prevent problems to other systems linked to this node.
• Q:  Where can I find the "prefix code" for the node?
• A:  The "prefix code" is only available to UARC members and may be found in the printed edition (not the online version) of UARC's newsletter, the Microvolt on the inside front cover.  If you are a member and cannot find this information or do not have access to a copy of a recent Microvolt, feel free to contact a member of the UARC board.  Do not give out the prefix code on the air or to non-UARC members.
  
• Q:  Can I connect to my friend's Echolink/Wires(tm)/eQSO(or other) node?
• A:  There are several systems available that allow interconnection of radios via the Internet - and IRLP is one of them.  Note that, in general, these systems do not interconnect with each other and for this reason, an IRLP node cannot be connected to an Echolink node.  Having said this, it is worth mentioning that there are several means of providing interconnection - some of which are detailed on the IRLP website on their Other Links page.
• Q:  I just looked up the node on the  UARC IRLP Node Status Page for this node and it shows the node as being "Offline" - why is that?
• A:  This is not the normal condition and it may be in this mode for maintenance purposes, or to disable the node in the event that the repeater is being used for a special-events activity and node activity should be suspended.  If you wish to use the node and find it set to the "Offline" mode feel free to contact one of the UARC repeater committee members for assistance.
• Q:  Why did UARC choose IRLP instead of Echolink/eQSO/Wires, etc.?
• A:  For several reasons:
• IRLP was chosen because it is the most secure.  IRLP's authentication and security is centrally controlled, closely monitored and based on well proven technology.  Some of the other systems rely on the "honor system" in order to prevent unlicensed individuals' access:  Usually, the "honor system" works - but not always.
• IRLP uses the Linux operating system.  This operating system is generally more reliable and secure than more common operating systems.  When an IRLP system is configured, unneeded ports and processes are turned off or never invoked.  Many Linux boxes operate without rebooting for months at a time, needing to do so only for hardware upgrade/replacement.
• Also, IRLP policies allow only linking via radio, reducing the possibility that an unlicensed individual can gain access to the system.  Other systems use the "honor system" to prevent access by unlicensed individuals - but again, this doesn't always work.  (It is true that an unlicensed person could simply get a radio and get on an IRLP system, but radios are far less common and are less available than home computers.)

Known bugs and "features":

There are a few known bugs to be worked out of the system.  Some of these are:

• Occasional audio dropouts:  Occasionally, you'll hear stuttering or dropouts of audio.  This is not a bug but probably due to lost packets at the other end of the Internet connection.  Many users get their IRLP Internet connection via Cable, or Wireless modem, and these services that share the "pipe" with many other users:  At times of heavy loading these circuits may occasionally drop packets.  The UARC IRLP connection is made via a dedicated connection to an "Internet Service Provider's Provider" (that is, a company that provides Internet to ISP's) and has only the one subscriber and is thus far more robust than a cable modem or wireless connection in this regard.
• A known null on the transmit coverage:  The '76 repeater has a known problem with transmit coverage along the western portion of the Salt Lake valley.  PLEASE NOTE that this problem only affects transmit coverage and not receive coverage, so you may be getting into the repeater better than you think.  We are considering several possible solutions to this problem and hope to resolve it in the near future.
• "IRLP"-specific identifiers:  When in IRLP mode, you may hear the repeater "ID" more often than before.  Some of these IDs are from the IRLP radio link:  The link ID sounds almost identical to the repeater ID except it doesn't have a "/R" at the end.  Note that these IDs or other CW status signals or indicators cannot be heard by those listening over the Internet.
• Be aware that the repeater may be in IRLP mode:  Other than listening to the repeater for IRLP-originated traffic or "IRLP" being sent in CW, there is no obvious way to determine if the IRLP node is active:  Please be aware of this when calling locals.  If you wish to have a "local" conversation, please be aware that you may be being heard by a lot of people across the globe!
• There are likely to be a few other bugs that show up now and then:  Please be patient and let one of UARC's repeater committee members know about it.
  

For the procedure for using this node, go to the UARC IRLP Node User's Guide page.  There is also the UARC IRLP Node Quick Reference - a one-page sheet showing the necessary commands.

For more info about the W7SP 146.760 repeater, go to the '76 repeater page.

If you have any questions to ask about this IRLP node, please click here.

Go to the Utah Amateur Radio Club (UARC) repeater page.
or
Go to the Utah Amateur Radio Club (UARC) home page.