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For convenience the regions are further divided into a total of 90 zones. While often following political boundaries, in more remote land and sea areas these are often defined to be roughly equal in size and so can have very low populations. As examples,
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2006 map showing the three ITU regions and the three lines that define the borders (along with an extra line)
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is divided into seven zones, and in one
Pacific Ocean zone the only land area is tiny
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Region definitions as specified in
Article 5 of the ITU Radio Regulations
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operators may attempt to contact as many zones as possible.
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193:; thence by great circle arc to the intersection of
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Regions used for managing the global radio spectrum
23:ITU regions and the dividing lines between them.
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68:, the main reason for defining the regions.
218:uses some of the definitions of Region 1.
134:The eastern boundary is defined by Line B.
111:The western boundary is defined by Line B.
201:; thence along meridian 20° West to the
57:for the purposes of managing the global
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316:International Telecommunication Union
278:International Telecommunication Union
47:International Telecommunication Union
235:. For certain awards and contests
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165:Line B is a line running from the
90:Commonwealth of Independent States
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64:. Each region has its own set of
53:, divides the world into three
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49:(ITU), in its International
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185:arc to the intersection of
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216:European Broadcasting Area
127:, and some of the eastern
177:to its intersection with
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298:Hammaps > ITU zones
214:The definition of the
149:east of and including
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142:contains most of non-
66:frequency allocations
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274:"Radio Regulations"
199:parallel 10° South
191:parallel 40° North
179:parallel 72° North
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195:meridian 20° West
187:meridian 50° West
171:meridian 10° West
51:Radio Regulations
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129:Pacific Islands
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243:External links
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40: Region 3
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282:. Retrieved
280:. 2005-09-08
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183:great circle
181:; thence by
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104:, including
102:Persian Gulf
100:west of the
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119:covers the
98:Middle East
55:ITU regions
284:2006-07-18
260:References
229:Antarctica
203:South Pole
167:North Pole
123:including
96:, and the
80:comprises
72:Boundaries
222:ITU Zones
175:Greenwich
125:Greenland
310:Category
140:Region 3
121:Americas
117:Region 2
94:Mongolia
78:Region 1
62:spectrum
161:Lines:
155:Oceania
169:along
88:, the
86:Africa
82:Europe
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210:Usage
59:radio
197:and
189:and
151:Iran
147:Asia
106:Iraq
45:The
173:of
144:FSU
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