[Tagging] "satellit"

Warin 61sundowner at gmail.com
Tue Mar 5 22:48:00 UTC 2019


On 05/03/19 21:30, Sergio Manzi wrote:
>
> On 2019-03-05 11:14, Warin wrote:
>
>> On 05/03/19 20:08, Jean-Marc Liotier wrote:
>>> On Mon, March 4, 2019 11:20 pm, Warin wrote:
>>>> https://wiki.openstreetmap.org/wiki/Proposed_features/antenna:use
>>> This is a way to solve most of the problem, but it fails the "map it 
>>> as I
>>> see it" test.
>>>
>>> man_made=antenna + antenna:reflector=dish does map the satellite
>>> communications antenna I just spotted... But what the naïve mapper I am
>>> really wants is man_made=antenna + antenna=dish (or
>>> monopole/dipole/yagi/helical/phased_array ...) : "map it as I see it" !
>>>
>>> Then one can add antenna:propagation, antenna:application,
>>> antenna:propagation, antenna:polarisation etc. but they are accessory.
>>>
>>> Am I mistaken in believing that the main tags chain should focus on
>>> offering a straightforward way to map the apparent physical features,
>>> rather than invisible distinctions ? Not that invisible distinctions 
>>> are
>>> not welcome too - but they should stay out of the way.
>>
>> Sympathies!
>>
>> An alternative is available ...
>>
>> man_made=antenna
>>
>> dish=yes
>
> So far, so good.
>
>
>> cross_gain_feed=yes
>
> What does that mean? I'm a licensed radio amateur (/for more than 30 
> years/) and I never heard of that term... :-/
>

Arr  casse grain ... apologies. (added word to spell checker)

How is the reflecting dish signal connected? There must be a real 
antenna that does that.
And then there is the way the antenna gets the reflected signal.
https://en.wikipedia.org/wiki/Parabolic_antenna



There is a lot to learn, we should have more life times ...

>
>> two_way=yes
>
> Prove that!
>
As an example: This may be a TV studio where TV programs are transmitted 
to a satellite for distribution.
As a TV studio it may also receive TV signals from remote broadcasts... 
or other TV studios connected to the satellite.

OSM accepts 'knowledge' as a suitable source of information.

>
>> satellite=yes
>
> Prove that! Because it points at the sky? There are many other good 
> reasons to point an antenna at the sky...
>

Again? If you don't know .. don't tag it. But don't deny others from 
adding stuff they do know.

Don't know that a road is closed in winter? then don't tag it.
Know that a road is closed in winter - tag it.
Come across an open road in summer that is tagged closed in winter ... 
and you want to verify the closure? Come back in winter or contact the 
relevant mapper.

The most common antenna people see are TV antennas, most pople know what 
they are and can tag them at least the basics. Next would be mobile 
phone antennas. After that they are not so well known, most would have 
to look them up to find out what they are.





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