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@kenharker.com
> http://www.kenharker.com/
>
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>
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