naomi

North American Overlay Mapping

Layer Notes - Amateur Radio Prefixes

Prefixes are shown in a number of ways - the design-brief was to make them as quickly understandable as possible. Prefixes are split into three main groups, which are shown on the map as follows:

  1. One prefix covers the whole country, without any divisions. Typical examples are C6: The Bahamas. The prefix overlay shows the prefix itself, with no other additions.
     
  2. A country has a number of prefix areas, each of which correspond to individual country-regions. A typical example of this is VE:Canada. The prefix overlay shows the prefix itself, plus the region-borders that correspond to each prefix sub-division.
     
  3. A country has a number of prefix areas, each of which correspond to regions composed of a number of individual country-regions.. A typical example of this is W:United States of America. The prefix overlay shows the prefix itself, plus a red border that shows how a number of individual country-regions are grouped to form each prefix sub-division. The region-borders themselves have not been included, but can be added by turning on the 'State' foreground or background overlay.
     

The size of prefixes used throughout the North American Overlay Mapper is based purely on map-room and clarity of information. No other meaning is intended or should be inferred.

A sortable/searchable list of all DXCC entities has been provided; you can access this by clicking 'Tools' > 'Table Viewer' > 'DXCC'.

Other callsign resources can be found by clicking 'Tools' > 'Operating'.

The best source of prefix information on the Internet is the big list (>350Kb) at AC6V.Com