A free Telnet and Packet-radio client software for the DX-cluster by HB9BZA

Now fully supporting the 60 m band + displaying last upload date on LoTW!

International version - 19 languages supported

(link to the japanese site)




















your language
Please note that translations for three languages are no more complete:
Slovenian (V8.2); Bulgarian and Danish (V8.3).
New texts added after the version mentioned will appear in English.
New translators would be welcome for those languages!


RXCLUS is a telnet and packet radio software for Windows 9x/ME/NT4/2000/XP/Vista/7/8/10. It is designed for the DX'ers and SWL's using the DX-Cluster system to be informed in real time about the DX activity on the amateur bands.

A DOS version is still available for DOS and Windows 3.x users but is no more further developed nor supported.

There is currently no Linux version, but the Windows version runs quite well using wine, the windows "emulator". More details can be found here.

The first job of RXCLUS was historically to monitor a packet radio frequency, without requiring a connection, and to extract from the data flow the information coming from the DX-Cluster system to display it in a special window. That's the origin of the name RXCLUS. The program can still do that, but it learned doing many more things and today most people use it to connect to DX-Cluster nodes using packet-radio or telnet.

RXCLUS allows you to store your lists of missing DXCC countries or IOTA groups in databases and is then able to issue alarms only for the announces which are of interest for you.

Here is a list of the most important features of RXCLUS. Just click on the underlined keywords to view some screen shots which should demonstrate better then words some of the functions of this software.

  • You can switch between 7 windows which display different kinds of information: 4 Terminal windows (showing all received data, with or without a connection), DX window (only DX-Cluster data), Alarm window (only DX-Cluster data of interest for YOU) and LoTW window (only spotted users of the ARRL's Logbook of the World system).
  • You can establish up to 4 connections to the DX-Cluster network using a TNC on a serial port, SV2AGW's Packet Engine together with a BayCom, DRSI, sound card and many other devices, or telnet with its huge telnet nodes directory.
  • Connections can be established with connect scripts and are automatically restarted if they are broken.
  • Incoming DX, WWV, ANN, CHAT and TALK spots can be stored into databases, whatever software is used by your favorite server (DX-Spider, AR-Cluster, clx, DxNet, WinCluster).
  • The spots databases may be searched combining up to 4 criteria for DX; 3 criteria for CHAT and 2 criteria for ANN and TALK.
  • A DXCC database lists all current DXCC entities (you can add deleted ones). You can populate it with your current stand of worked and confirmed countries on 160 m to 2 m + satellite, for both paper QSL's and LoTW credits, manually or by importing ADIF files generated by your logbook software.
  • You can display a summary of your DXCC scores and list all countries not worked or not confirmed on a particular band or mode.
  • An IOTA database lists all currently numbered islands groups. You can populate it with your current stand of worked and confirmed IOTA references, manually or by importing an ADIF file.
  • You can display a summary of your IOTA scores, including the list of awards you could apply for, and list all references not worked or not confirmed on a given continent.
  • A world countries database gives you useful information about each country, including the antenna heading and distance from your QTH or the sunrise and sunset times. It can be accessed just by clicking on a call in a DX spot.
  • An extensive options section with 21 pages allows you to customize almost all in the program, for example the bands on which you want alarms, the CW or speech alarms, the colors and fonts and of course the language (16 languages are currently fully supported and 3 others mostly).
  • A DX spot simulation function allows extensive testing of the program without polluting the DX-Cluster with test spots.
  • All current users of the Logbook of the World (LoTW) system are automatically identified using the list released weekly by the ARRL. This list can be updated from inside the program. Your list of confirmations can be imported directly from the LoTW users site.
  • The last upload date can be checked for each LoTW user and those who didn't upload any log during a configurable period (1 month to 10 years) can be ignored.
  • A limited CAT control of a maximum of 2 transceivers allows you to QSY instantly to the frequency and mode of a spotted DX.

Please note that most screen shots were captured on a Windows XP machine.
They would look slightly differently on other versions of Windows.


Please note this software is no more developed and only minimally supported.
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