Hi, I just wanted to share some thoughts about antennas and radio supports mapping on this list.
There are currently several tags in use to map telecommunication or radio broadcast supports : man_made=tower + tower:type=communication man_made=telecommunication_tower and so on... but this won't allow us to add antennas on them at all or describe how these supports are used. Antennas and stations (relations of supports + antennas + cabinets) may be interesting too. Some French mappers and I are currently looking for a sustainable model to map radio sites, radio stations, supports and antennas since our regulator allows free datasets to be downloaded and part of them can be added on the map (Etalab license compatible with OdBL). The point is to add references (ref:FR:ANFR) on right objects first as for linking to the whole dataset which shouldn't be imported in OSM (only technical data and not so geographical) I've proposed such things (unfortunately only in French for the moment) but it's not finalized or transposable on the map http://wiki.openstreetmap.org/wiki/File:Radio_antennas_mapping_proposal.png The problem is to add several antennas on the support itself (sometimes on masts, sometimes at the top of buildings). Supports can be composed of several decks and several antennas can share same lat/lng (but different elev) and currently can't be added as nodes. Relations can really be a pain to maintain in such situation too. May someone have idea and help solving the issue without adding 3rd dimension to OSM model? Cheers François -- *François Lacombe* fl dot infosreseaux At gmail dot com www.infos-reseaux.com @InfosReseaux <http://www.twitter.com/InfosReseaux>
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