Welcome to the AR-Technology web site. AR-Technology has developed a series of next-generation DXing and Contesting applications, which make use of the Internet for high-speed, high-bandwidth communications. Our flagship product, AR-Cluster allows hundreds of amateur radio stations to be connected sharing and exchanging DX information via popular protocols. Between August 2001 and September 2003, we served over 2.2 million DX spots to amateurs around the world.

  AR-Cluster is now in its 10th year of production.  In celebration of this event, AR-Cluster version 4 is now free. 

AR-Cluster provides a direct connection into your regional DX cluster network using traditional TNC/RF connections, AXIP using BPQ32, or AXIP using an external JNOS computer. We highly encourage you to connect into your local regional networks but if your are in an isolated area, or not affiliated with a regional network, or want a wider coverage of DX spots, use the AR-Cluster built-in TCPIP networking and connect into the AR-Cluster Internet backbone or "Fire Hose" as its been called. There you will find a huge selection of local, continental and worldwide DX spots. Too big a drink from the "Fire Hose" , that is too many DX spots, activate the built-in node-to-node filtering and limit the spots to your desired area of coverage even down to the state level. Your users can further limit their spot coverage by applying individual user filters to DX spots. In addition, node and user filters are available for announcements and WX spots.

Being able to supply accurate filtering down to the state requires a current callsign database. AR-Cluster includes a copy of the AR-Technology callsign database which no only supplied filtering lookup but also includes callsign address lookup for both US and Canadian hams.

The AR-Cluster version 4 code offers many new enhancements including speed improvements, more advanced filtering and high-level network diagnostics. The version 4 code also allows for setting a Network Origination Filters, NOF for each node. This allows the filtering of the node connection protocol by the CTY and state the same way that we do the DX and announcements. For example, the AB5K node runs wide open with node connections from all over the world . It also feeds a couple of Texas nodes. Using the NOF filters, we can only report node connections in the state of Texas to the other connecting Texas nodes. This is a nice way to run a hub node that’s open to the world while feeding a local state nodes who do not want to see out of area nodes being reported across the network. .

Don't be fooled by other "Copy Cat" cluster packages that claim to be faster.  They lack many of the advanced features of AR-Cluster.

Al, K7AR, has developed a Web Interfacehref="http://k7ar.net:4000/dx.asp">Web Interface into AR-Cluster. The free web interface uses ASP code which can be ran on a Windows computer running a Web server. The web interface includes several web pages showing DX spots WWV and Announcement spots.

We also support a interface to DX Atlas by VE3NEA. The DX Atlas interface provides graphical mapping presentation of data collected by AR-Cluster. DX Atlas Samples:
    Six meter activity
    Show Users on AB5K node
    Show Configuration with 6 meter plots.
    Show Nodes in Europe
    England Nodes and Users
    Show Nodes US
    Couple of stations that set their Lat Lon wrong

AR-Cluster version 5 is getting close to beta release. Coming soon!

I'm currently building a Texas sized contest station on a ranch in central Texas.   Tune back in for more progress on the antenna farm.   See you in the next contest!     73 Terry AB5K