North American Overlay Mapping
Layer Notes - ARRL Sections
The American Radio Relay League (ARRL) divides the USA into 15 Divisions and 71 Sections. A full, sortable list of these can be seen by clicking 'Tools' > 'Table Viewer', and choosing 'ARRL Sections/Divisions' from the Select List.
The Radio Amateurs of Canada (RAC) use the two-letter province code as their section abbreviation, though the Northwest Territories can also use the three-letter 'NWT' abbreviation.
The sections are used as an exchange in a number of contests, including the popular Field Day and Sweepstakes.
Many of the USA sections consist of entire states; some states have more than one section. Each division is headed by a director. Each section is headed by a section manager.
The different sections have a background layer as well as a foreground overlay in the North American Overlay Mapper. The background layer consists of colored areas and borders that define each section area; the foreground overlay consists of colored borders and text. The reason for this separation is so that the section borders and text can be overlayed and compared with other data; i.e. to see where the section borders are on the relief map, or to see which counties fall within which section area.