Some of the principal WU1ITU activity periods have been:
- CQ World Wide DX CW Contest, 23-24 November 1996
- World Telecommunication Day, 17 May 1997
- CQ World Wide WPX CW Contest, 24-25 May 1997
- IARU HF World Championship, 8-9 July 2006
- World Telecommunication and Information Society Day, 17 May 2007
- CQ World Wide WPX CW Contest, 26-27 May 2007
- IARU HF World Championship, 14-15 July 2007
- World Amateur Radio Day, 18 April 2008
- World Telecommunication and Information Society Day, 17 May 2008
- World Amateur Radio Day, 18 April 2009
- World Telecommunication and Information Society Day, 17 May 2009
- World Amateur Radio Day, 18 April 2010
- World Telecommunication and Information Society Day, 17 May 2010
- World Amateur Radio Day, 18 April 2011
- World Telecommunication and Information Society Day, 17 May 2011
- World Amateur Radio Day, 18 April 2012
- World Telecommunication and Information Society Day, 17 May 2012
- World Amateur Radio Day, 18 April 2013
- World Telecommunication and Information Society Day, 17 May 2013
- World Amateur Radio Day, 18 April 2014
- World Telecommunication and Information Society Day, 17 May 2014
- World Amateur Radio Day, 18 April 2015
- World Telecommunication and Information Society Day, 17 May 2015
- World Amateur Radio Day, 18 April 2016
- World Telecommunication and Information Society Day, 17 May 2016
- World Amateur Radio Day, 18 April 2017
- World Telecommunication and Information Society Day, 17 May 2017
- World Amateur Radio Day, 18 April 2018
- World Telecommunication and Information Society Day, 17 May 2018
- World Amateur Radio Day, 18 April 2019
- World Telecommunication and Information Society Day, 17 May 2019
- World Amateur Radio Day, 18 April 2020
- World Telecommunication and Information Society Day, 17 May 2020
- World Amateur Radio Day, 18 April 2021
The current (2021) QSL design is shown above. QSLs are being sent in response to cards
received through direct mail or the bureau.
Most activity is on HF FT4, FT8, and CW.
