Contest Calendar
Corrections and additions please direct to on9tt [at] uba [dot] be (ON9TT)
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| January 2021 | April 2021 | July 2021 | October 2021 |
| February 2021 | May 2021 | August 2021 | November 2021 |
| March 2021 | June 2021 | September 2021 | December 2021 |
| From January 1 untill December 31 UBA International Prefixhunt on all HF bands in all modes |
| From January 1 untill December 31 CQ DX Marathon on all HF bands in all modes |
| From January 1 untill December 31 The TBDXC 2021 CW/SSB Ultra-Marathon |
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