Chathams imported by HB 19 Apr 2010
http://wiki.openstreetmap.org/wiki/Proposed_features/Communications_Dish
http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dtower
http://wiki.openstreetmap.org/wiki/Proposed_features/Communications_Transponder
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HB: use man_made=tower instead of man_made=communications_dish ?

Glen: we should use man_made = tower as that proposal seems more fleshed out. I also added communications_transponder:service = satellite - A bit generic but better than nothing - At least we know it isn't GSM, etc.
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RP: i think tower is good for now. these have all been round the block a few times, and will likely change again anyway - i can see several being consolidated
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HB: mainland UPLOADED 2010-11-25 in changeset 6452357
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HB 22 Aug 2012: checked for new dataset, no changes.