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peter.gordon2

GPS: Garmin Nuví 760







Post Can external antenna's increase accuracy?     
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G'day all.
Been looking at external antenna's for my Nuvi 760. Before I purchase one, I was wondering if they are capable of giving my GPS increased accuracy over the standard internal antenna?

I've done a search on here and nothing related has come up?

Cheers
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allenpremier

GPS: garmin 250W







Post Can external antenna's increase accuracy?     
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A external antenna's doesn't increase accuracy. It allow to obtain more straing of satelitte signal.
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tv

GPS: Garmin Nuvi 760







Post external antennas     
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Hmmm.

I always thought that the more satilites seen the more accurate the readings?
So if an external antenna helps with aquiring more satilites then accuracy happens by default?

Sit under my carport without external antenna, I get 7 satilites and accuracy is 10 -12 mtrs. With the external antenna, 4-5 mtrs!
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quaddin

GPS: Garmin Oregon 300







Post External antenna     
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I use an external antenna on my Garmin 3 Plus and it does give better reception in heavy tree cover and around other obsticles. An external antenna on a Nuvi should give you a better view of the sky than a unit mounted on the dash of a vehicle. Go with the external. You won't be sorry.
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ivan.ivasenko

GPS: nuvi 765T







Post Re: external antennas     
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tv wrote:
Hmmm.

I always thought that the more satilites seen the more accurate the readings?
So if an external antenna helps with aquiring more satilites then accuracy happens by default?

Sit under my carport without external antenna, I get 7 satilites and accuracy is 10 -12 mtrs. With the external antenna, 4-5 mtrs!

You're 100% right and I agree with you Smile - the more powerful signal, the more accuracy you'll get on your GPS device.

Cars, which have factory GPS, usually have external antenna it worth to have on our cars IMHO.
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rxr29

GPS: Nuvi 670







Post External Antenna     
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Could anyone recommend a specific brand that would work well with the Garmin Nuvi 670?
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Guest








Post better antenna     
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Definitely, the better antenna the more birds.

Precision GPS devices used with very accurate time signal applications try to get 12 GPS satellites. I cannot remember the time accuracy but it was in the 100 nanosecond range.

Of course car navigation GPS does not need that accuracy, but the better the antenna the more birds the more accurate the result; still holds.





emtekworks

GPS: Nuvi 205







Post Antenna     
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Yeah, the more sats, the better the accuracy
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eyeo12

GPS: Garmin Nuvi 300







Post Re: Antenna     
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Agreed but I never had a need for external antenna. The car unit snaps to roads anyway.
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pjnuk

GPS: Garmin Nüvi 765T







Post External aerial     
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Can someone recommend an external car aerial for the 765T? Hopefully it wil stick to the car roof magnetically. Thx.
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t.sew

GPS: Zumo 660, Nuvi 770







Post Re: External aerial     
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See Garmin GA25 MCX Antenna.
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thuytle99

GPS: Nuvi 765T







Post Can external antenna's increase accuracy?     
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Just FYI, got the 765T plus garmin stock antenna giving me more SAT signal Smile
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johmazz2006

GPS: Garmin Nuvi 765, Garmin 3950LMT, Garmin 2455LMT, Navman40, Garmin StreetPilot 3







Post Re: Can external antenna's increase accuracy?     
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External aerial definately gives better reception of satelites. Haven't had to use it yet on the 765 yet though.
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xadrianx

GPS: Garmin StreetPilot 7200







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I use an external antenna on my Garmin Streetpilot 7200 and it does give better reception.
Garmin oem antenna, no china....
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vancewankai

GPS: Garmin Nuvi 370







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I bought an external antenna and it was completely worthless. It made no difference whatsoever.
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