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CDXC Logo

CDXC, the UK DX Foundation, supports DXing and operating excellence on the HF spectrum. As part of CDXC's activities, Club Log provides support for three distinct DXing challenges, designed to stimulate activity and reward members for their achievements.

LF Challenge
1 March - 31 March 2015
160m, 80m, 40m
DX Marathon Challenge
1 January - 31 December annually
160m to 6m
HF Challenge
1 September - 30 September 2015
15m, 12m, 10m, 6m
  • Non-members may participate in the Challenges, but are not eligible to win prizes
  • You can join CDXC online with Payal - sign up form

How to participate

To join any of the three challenges, go to your Settings page, and click on the Club Memberships tab. Select the challenge or challenges in which you would like to partcipate and add yourself. Please allow up to 24 hours after joining for your log to be included, and remember that if you are not already a CDXC member you will not be able to join the CDXC DX Marathon Challenge.


The LF Challenge

March - 160m, 80m, 40m

The Penallt Trophy, given in memory of Allan Phillips, GW0BIC, is awarded to the CDXC member who works the most DXCC entities on the 160m, 80m and 40m bands during the month of March each year (January prior to 2005). Each DXCC entity is counted once only, regardless of how many bands or how many modes that entity is worked on. There is no minimum number of entities worked in order to qualify. QSLs are not required.

The HF Challenge

September - 15m to 6m

The HF Challenge seeks to stimulate DXing on the high HF ham bands, from 15m to 6m inclusive (where permitted) during September. Each DXCC entity is counted once only, regardless of how many bands or how many modes that entity is worked on. There is no minimum number of entities worked in order to qualify. QSLs are not required.

The CDXC DX Marathon Challenge

12 months - all bands, 160m to 6m

The DX Marathon Challenge is a year-long challenge starting at midnight on 1 January annually. The objective is to work as many DXCC entities as possible during the year. Each DXCC entity is counted once only, regardless of how many bands or how many modes that entity is worked on. There is no minimum number of entities worked in order to qualify. QSLs are not required.