North American Overlay Mapping
Layer Notes - CQ Zones
The CQ Zone background layer shows how North America has been divided into regions by CQ magazine. This zone system is the most popular one amongst Radio Amateurs, and is used in many contests and operating awards. The positional data has been obtained from a number of sources, as the main list of CQ Zone Definitions has a suprising number of inaccuracies in it, despite various emails by the author to the CQ offices. I now maintain a corrected version of this list, which can be seen on my website here.
Note that any list of regions is normally composed of the countries represented, so therefore any lines across sea or ocean are generally representational, and should not be regarded as strictly definitive.
A free world map of all CQ Zones is available from the EI8IC website by clicking Here.