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Reasons for choosing DXLog

  • Supports over 450 contests out of the box and more are being added based on user demand
  • Keyboard centric user interface, you never need to take your eyes off the screen or hands off the keyboard
  • Frequent releases with continuous improvements
  • WRTC proven with e.g., referee mode
  • Used by world leading contesters and super stations
  • Used by honor roll dxpeditions
  • Active and responsive support via the email reflector
  • DXpedition targeted features such as QQSL, WSJT-X/MSHV integration etc.
  • Advanced multi-operator support such as multiplier passing, skeds, propagation estimates, and band change warnings
  • World map showing greylines and own spots
  • High performance SO2V support for dual and single receiver radios
  • High performance SO2R support with scenarios and dual keyboard support
  • Outstanding support for OTRSP and microHAM devices
  • Only logger with native support for the YCCC SO2R Mini
  • Only logger with a completely open and published contest definition syntax
  • Outstanding interlock support for e.g., inband operation including Winkey paddle operation
  • Optional standalone cluster client that consolidates spots from many sources, supports blacklisting etc.
  • Spectrum display with ICOM radios, Elecraft K4, or standalone SDR such as Airspy or SDRPlay


The project was started by the late Kresimir (Chris or Krešo) Kovarik, 9A5K, in the
summer of 2011 with the ambitious goal to create the most easy to use and versatile contest
logging software available.

DXLog has a classic, keyboard-centric, look-and-feel and builds on a long standing tradition in
keyboard shortcuts and other user interface elements.

Dxl prev2.png

Krešo was a central person in the Balkan ham radio community and a globally renowned and generous
contester, which included multiple participations in WRTC.

He was also a software professional which, among other things, has given DXLog perhaps the most
powerful scripting system and the most advanced, and open, support for complex contest rules of all
contest loggers. In fact, unlike with any other contest logger, all users have access to the full
power and flexibility of the DXLog contest rules engine.

Krešo at WRTC 2014. Photo courtesy of Nodir EY8MM.

Krešo at WRTC 2014. Photo courtesy of Nodir EY8MM.

Krešo holding the Croatian team sign at WRTC 2018. Photo courtesy of Carsten DM9EE.

Shortly before Krešo's key went tragically silent in the early spring of 2019, his close friend
and ham radio community benefactor Krassy K1LZ acquired all rights to the software, including the
source code, with the ambition to donate it to the ham radio community.

At this time a small team, led by Paul K1XM, was also formed to maintain and develop the software.

Later in the spring Krešo was posthumously inducted into the CQ Contest Hall of Fame for his
contributions to ham radio contesting. The induction speech by Krassy K1LZ can be viewed by
clicking the picture below.

Krassy's induction speech at CQ Contest Hall of Fame 2019

DXLog is still in a state of constant development. New versions offering new features and defect
corrections are released on a regular basis.

The latest version can always be downloaded from HERE.

Authors and Contributors

The late Kresimir (Krešo) Kovaric, 9A5K, is the original author of the DXLog software and wiki.

The DXLog community owes great gratitude to Krassy K1LZ, development team lead Paul K1XM, and Björn SM7IUN.

Krassy for for having acquired the source code and covering all administrative costs like web hosting,
and Paul and Björn for having spent countless hours correcting bugs, improving the DXLog code base, and
patiently guiding and helping users on the DXLog email reflector.

Additionally, James M1DST is the hands and brain behind many important
improvements, including the operator statistics, exchange display, and DXLog's migration to the .NET 4.8 framework.

Paul K6PO added the innovative spectrum display did wonders to the digital modes support.

Olli DH2WQ did significant improvement to, among other things, internationalization.

World leading contesters like E77DX, 9A1AA, 9A6C, N6MJ, CT1BOH, KL9A, I2WIJ, LZ5DB, IK2NCJ, N6TV,
W9PA, YT3W have contributed immensely through improvement suggestions, patient testing, and helpful feedback.

A special thanks to Ingo SM5AJV/SE5E for his tireless and detailed testing and feedback of DXLog as well as developing
the clever software for the always-up-to-date list of supported contests.

Finally, Björn SM7IUN, Jim M0CKE, and Ken K6MR are recognized for spending a many, many hours improving and extending this wiki.