Martin Koppenhoefer <dieterdre...@gmail.com> writes: > sent from a phone > >> Il giorno 18 apr 2016, alle ore 04:39, John Eldredge <j...@jfeldredge.com> >> ha scritto: >> >> The 808-foot antenna for radio station WSM fits both the tower and mast >> descriptions we are using. >> <https://en.m.wikipedia.org/wiki/WSM_(AM) > > IMHO this could be either tagged as mast or as antenna, but hardly as a tower.
I think part of the difficulty in this discussion is that in radio usage, anything with latticework is called tower. For example, this is the standard product in 10-20m antenna supports: http://www.rohnnet.com/rohn-45g-tower I think you would call it mast, but amateur and other radio people call it tower (en_US). These are sometimes guyed and sometimes not guyed The same company makes things they call "masts": http://www.rohnnet.com/rohn-telescoping-masts Again they can be guyed or not. My understanding is that in en_GB, one says "mobile phone mast" for most antenna support structures. In en_US, normal people do not use the word mast (other than for ships), and if you pointed to either a lattice-type or a monopole type mast and asked for the term, 99.9% of the poeple would say "cell tower" or "cell phone tower". People would think the monopole type is basically the same thing, less ugly, and that it's just a detail rather than a fundamentally different thing. I think the real issue is that we're arguing about a relatively unimportant detail in the primary key, instead of stepping back to think about what the real representation issues are. Certainly "fire tower", "eiffel tower" or anything with rooms are a totally different thing than Rohn 45 or masts used to support antennas. I think that's at the root of the disagreement; those with a background in radio want to use tower for what radio people call towers, and others (especially en_GB, I think) In US regulatory language, the term is "antenna support structure". So one possibility is to reserve man_made=tower for things that are for other purposes or really significant (have stairs, ec.), and to use man_made=antenna_support for towers (in the rohn 45 sense) and masts that primarily support antennas. And probably also things that fundmanentally are antennas rather than support them; they are not easy to tell apart and there are things that are both. If people want also antenna_support:diameter=2m antenna_support:type={lattice,monopole} antenna_support:lit={no,red,flashing-white} that seems fine and is likely not too controversial. The alternative view is to adjust 99% of man_made=tower to man_made=mast, after beefing up the mast definition to be more explicit about things that are called tower by radio people.
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