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Streetpilot i3 external antenna position - the Maplins one.
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dvhttn
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PostPosted: Sat Feb 03, 2007 10:23 am    Post subject: Streetpilot i3 external antenna position - the Maplins one. Reply with quote

Hi,

Just going to pick up an external antenna from Maplins - the one at http://www.maplin.co.uk/module.aspx?detail=full&ModuleNo=48721&doy=2m2#more_info . From the description it's not clear exactly how it fits to the car. I was hoping I could fit it to the inside of the screen behind the rear view mirror (normal screen - not heated or anything). Anyone got one who could advise?

Thanks in advance - though it may become clear once I have it in my hands!

Thanks.
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hodgy
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PostPosted: Sat Feb 03, 2007 11:36 am    Post subject: Reply with quote

Hi,

The base of the antenna is magnetic - although it also has four tiny pads in the corners so it doesn't scratch anything you put it on.

If you want to use is on your rear view you may need to use some double sided tape perhaps - i'm not really sure.

I routed mine behind the dashboard then under the carpet and up through the rear seats into the boot and then up to the rear of the roof top.

Sorry i couldn't give you specific help regarding fitting to the rear view mirror Sad

Matt
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mikealder
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PostPosted: Sat Feb 03, 2007 2:14 pm    Post subject: Reply with quote

While you are at Maplins get some of These - velcro fasteners, very easy to use and allows quick removal of the aerial should you want to - Mike
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BigAl94
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PostPosted: Sat Feb 03, 2007 2:59 pm    Post subject: Reply with quote

Mine works well on the rear parcel shelf of a Citroen C5
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PaulB2005
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PostPosted: Sat Feb 03, 2007 4:08 pm    Post subject: Reply with quote

Mines stuck to my rear view mirror with double sided sticky tape.
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dvhttn
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PostPosted: Sat Feb 03, 2007 7:39 pm    Post subject: Reply with quote

Ta for the replies. Velcro'd it to the rear view mirror - tested it BEFORE I tucked the wiring away .... works a treat!

Thanks.
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dvhttn
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PostPosted: Tue Feb 06, 2007 8:22 pm    Post subject: Reply with quote

Hmmm. My rear view mirror is one of those that compensates for dazzle automatically, so no need to alter it after dark. Can't remember what they're called .... anyhow, I think the magnets from the aerial are affecting it as there is now a dark patch about where the aerial is.

The question therefore is, does the aerial still work if I stick it to the windscreen? That is, it'll be 'facing' the wrong way. i.e. into the car. Or does it not matter?

Thanks in advance!
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mikealder
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PostPosted: Tue Feb 06, 2007 10:17 pm    Post subject: Reply with quote

Velcro it to the windscreen facing outwards behind the rearview mirror, the logic being the glass and velcro offers less resistance to the signals than the glass and magnet if you put it the "other way" around.

It needs to be in the position behind the mirror to avoid the athermic coating on the screen if the vehicle is equipped with this.

If not you can mount the external aerial anywhere you like, although is it really giving you that much signal boost over and above the inbuilt unit? - Mike
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dvhttn
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PostPosted: Tue Feb 06, 2007 10:59 pm    Post subject: Reply with quote

mikealder wrote:

If not you can mount the external aerial anywhere you like, although is it really giving you that much signal boost over and above the inbuilt unit? - Mike


It is because of where I have to mount the unit, low down. Easily loses signal. I also stuck the external aerial in as a) it was cheap (a tenner) and b) I was wiring in a microphone for a hands free kit anyway. 2 birds with one stone and all that ...

Thanks!
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PaulB2005
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PostPosted: Wed Feb 07, 2007 1:33 am    Post subject: Reply with quote

Quote:
Velcro it to the windscreen


I thought the antenna had to be level?
Quote:
http://www.pocketgpsworld.com/modules.php?name=Forums&file=viewtopic&t=39745&highlight=antenna


I got all sorts of funny behaviour when mine wasn't mounted level.
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dvhttn
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PostPosted: Wed Feb 07, 2007 8:56 am    Post subject: Reply with quote

PaulB2005 wrote:
Quote:
Velcro it to the windscreen


I thought the antenna had to be level?
Quote:
http://www.pocketgpsworld.com/modules.php?name=Forums&file=viewtopic&t=39745&highlight=antenna


I got all sorts of funny behaviour when mine wasn't mounted level.


What happens when you go uphill ... ? :D
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PaulB2005
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PostPosted: Wed Feb 07, 2007 12:56 pm    Post subject: Reply with quote

I drive a Renault Megane with a 1.4 engine - therefore i avoid going up hill at all costs.... Embarassed Laughing

Seriously though i i don't think the comparatively slight angle of a hill affects it as much as the steep rake of the windscreen...
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erniesone
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PostPosted: Thu Feb 08, 2007 11:56 pm    Post subject: Reply with quote

dvhttn
Quote:
anyhow, I think the magnets from the aerial are affecting it as there is now a dark patch about where the aerial is.


If you use Velcro can you not remove the magnets. I do not know the Maplin receiver but normally the magnet is just behind a thin plastic sheet.

However, to get the receiver right next to the glass (UV windscreen) for best sky view, I constructed a little fibregass frame on the mirror base. Painted black it looks OK and the receiver is within half an inch of the glass.
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erniesone
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PostPosted: Fri Feb 09, 2007 12:05 am    Post subject: Reply with quote

PaulB2005
Quote:
Seriously though i i don't think the comparatively slight angle of a hill affects it as much as the steep rake of the windscreen...

With a normal windscreen it is likely best to have the receiver flat. However, those of us who ''suffer'' with the UV screen need all the help we can get and ''pointing'' the receiver at the bit of sky available seems to work.
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PaulB2005
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PostPosted: Fri Feb 09, 2007 1:12 pm    Post subject: Reply with quote

Quote:
With a normal windscreen it is likely best to have the receiver flat. However, those of us who ''suffer'' with the UV screen need all the help we can get and ''pointing'' the receiver at the bit of sky available seems to work.


As stated before I also "suffer" with a UV screen and find flat works best. When at an angle the sat nav goes haywire showing me moving when i'm not and carrying on along roads i'm not on. YMMD....
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