[CQ-Contest] IARU

[Frank Hunt]

All those 3 maps show variations when compared to the ITU CIRAF 
Broadcasting Zones map as published by the ITU:

http://www.itu.int/ITU-R/terrestrial/broadcast/hf/refdata/maps/index.html 

The zone boundaries very rarely follow physical or political boundaries, many 
countries are in multiple zones, ie. France is zone 27, 28 & 37 !

Obviously this could lead to some confusion, so best guide would be to use 
the table of ITU zones as shown on the ARRL web site:

http://www.arrl.org/contests/announcements/prefixtable.html

There is also an explanation of the zones for US and Canada:

http://www.arrl.org/contests/vev0vy.html#wkna

73, Frank ZL4BR
---------------------------------------------------------------------------------------------------
On 29 Jun 2006 Kenneth E. Harker wrote:

>      So, there have been several posts referencing maps or lists of 
> information about ITU zones:
> 
> JF9EXF: http://www4.plala.or.jp/nomrax/ITU/
> ICOM:   http://www.icomamerica.com/downloads/WorldMap_ITU_LR.pdf
> K3RXK:  http://www.spacetoday.org/k3rxk/ITUzones.html
> 
> There are incosistencies between these sources in a few places, and mostly 
> it is the ICOM map that seems to be in error:
> 
> * ICOM and JF9EXF show the boundaries between zones 1 and 2 as longitude 
>   139W, which would put some of KL7 in zone 2, but the K3RXK description 
>   says all of KL7 is in zone 1.
> 
> * The ICOM map shows the boundary between zones 7 and 8 to be longitude 92W.
>   JF9EXF and K3RXK shows the boundary to be the Mississippi River with all 
>   of Louisiana and Minnesota in zone 7.
> 
> * The ICOM map shows the boundary between zones 18 and 19 as longitude 30E.
>   JF9EXF and K3RXK shows the boundary to be the political boundary between
>   Finland (OH) and European Russia (R).
> 
> * The ICOM map shows Nigeria (5N) in zone 47, but JF9EXF and K3RXK put 
>   it in zone 46.
> 
> * The ICOM map shows the boundary between zones 55 and 59 as latitude 29S.
>   JF9EXF and K3RXK agree that all of South Australia is in zone 59, not 
>   zone 55.
> 
> Did I miss anything?
> 
> -- 
> Kenneth E. Harker WM5R
> kenharker at kenharker.com
> http://www.kenharker.com/
> 
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