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Old 04-27-2013, 05:20 PM   #1
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Do you need External GPS Antennae for Rand McNally GPS

Purchased a RVND 7715 (Precursor to 7720) last year. Plan on a huge trip through some remote areas wondering if I may need an external GPS antennae? I have not experienced the need for a GPS antennae with my boat or car GPS
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Old 04-27-2013, 05:28 PM   #2
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We have the 7720, haven't found a need for an external antenna for any of our vehicles. It seems to always find enough satellites to work fine.
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Old 04-27-2013, 06:40 PM   #3
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We have the 7710 and it seems to work fine without an external antennae.
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Old 04-27-2013, 07:54 PM   #4
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Have a 7710 and 7720. Both work inside the RV and the Toad with no external antenna...even sitting at the dinette doing trip planning.

It might not work deep inside a metal body RV like a Prevost bus, if it isn't near a window of any kind...but I am guessing.

Safe travels
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Old 04-27-2013, 08:49 PM   #5
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Being in a remote area will have no influence on GPS reception. You need a clear view of the sky, the signal is coming from a satellite, not a cell tower. Trees, tall buildings can sometimes cause problems, but remote areas won't.
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Old 04-27-2013, 09:00 PM   #6
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Maybe this should be in the

Things not to do

But traveling to Zion NP.
The sign said straight ahead to Zion
The Garmin said turn right.
My DW's car GPS said poor signal
Like a smuch I turned right

12 miles then sharp turn on to dirt
Oh no this is wrong
Back track and turn the dan thing off cause all it says I'm not allowed on this road.
I'm Australian, I'm allowed to say
Bloody gps
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Old 04-27-2013, 11:31 PM   #7
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I have used mine inside the garage with out any external antenna.
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Old 04-28-2013, 01:32 AM   #8
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When I first purchased my 7710 I ran it along with a Garmin Nuvi for comparison purchases. The 7710 never lost satellite reception without an external antenna, but I did need one for the Garmin. My 7720 was just as good until I switched to the RVND iPad app, which has also been excellent.

This was a couple of years ago so the newer Garmins may have improved.
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Old 05-04-2013, 11:53 PM   #9
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My understanding is most all GPS units will be both faster and more reliable
when connected to a antenna mounted on the rooftop.
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