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Horn antenna for gps
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| Has anybody seen subject?
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| I guess I need to explain that the horn antenna is intended used as
re-radiating the gps signal
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| helena 2005-08-23, 5:48 pm |
| I have heard of people using the external antenna for the TomTom GO
300s, but I have never heard of it referred to as a horn antenna... are
we talking about the same thing?
A lot of people have very think windshields and they are finding that
the distance to the destination is skewed by the power of the GPS
signal. The antenna helps the 300 get a stronger read...
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| Sam Wormley 2005-08-23, 5:48 pm |
| RK wrote:
> I guess I need to explain that the horn antenna is intended used as
> re-radiating the gps signal
>
>
One needs to maintain the right-handed circular polarization of the
GPS signals.
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| Richard Owlett 2005-08-24, 2:48 am |
| Sam Wormley wrote:
> RK wrote:
>
>
> One needs to maintain the right-handed circular polarization of the
> GPS signals.
It's been 40 years since I took the relevant EE courses, which I never
used. Could you point me to an explanation. thanks.
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| "RK" <R@J> wrote in news:430b7438$0$2332
$edfadb0f@dread11.news.tele.dk:
> Has anybody seen subject?
>
>
Yes i've seen the subject. I've an other statement; michelin tubes for
weels.
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| Meindert Sprang 2005-08-24, 5:48 pm |
| "XXX" <xxx@xxx.xx> wrote in message
news:N8WdnZ2dnZ34Tp6
OnZ2dnReukd6dnZ2dRVn
ypp2dnZ0@casema.nl...[color=darkred]
> "RK" <R@J> wrote in news:430b7438$0$2332
$edfadb0f@dread11.news.tele.dk:
>
What would you achieve with a horn antenna on a GPS receiver???
A horn antenna has a narrow angle which would limit the view of satellites
to 1, maybe 2, making it impossible for the GPS to get a fix.
Meindert
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| Wayne R. 2005-08-24, 5:48 pm |
| On Wed, 24 Aug 2005 10:51:04 +0200, "Meindert Sprang"
< mhsprang@NOcustomSPA
Mware.nl> wrote (with clarity & insight):
>What would you achieve with a horn antenna on a GPS receiver???
>A horn antenna has a narrow angle which would limit the view of satellites
>to 1, maybe 2, making it impossible for the GPS to get a fix.
Horns would be appropriate at the satellite end, wouldn't they?
What is the TX setup on those things?
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| Sam Wormley 2005-08-24, 5:48 pm |
| Richard Owlett wrote:
> Sam Wormley wrote:
>
>
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> It's been 40 years since I took the relevant EE courses, which I never
> used. Could you point me to an explanation. thanks.
>
http://www.sanav.com/re-radiating_antennas/ra-45.htm
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> What would you achieve with a horn antenna on a GPS receiver???
> A horn antenna has a narrow angle which would limit the view of satellites
> to 1, maybe 2, making it impossible for the GPS to get a fix.
The re-radiated GPS signal should distrubet the signal through narrow
corridor (cellar like) so wide angle isn't necessary
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| Wayne R. 2005-08-24, 11:48 pm |
| On Wed, 24 Aug 2005 11:34:38 GMT, Sam Wormley <swormley1@mchsi.com>
wrote:
> right-handed circular polarization
I think he's talking about this. If he's not, I'd like to know about
it.
I've talked to fairly knowledgable photography wizards who couldn't
explain circular polarization either. I presume the fundamentals are
the same (rf & optics)...any good explainers out there?
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