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post #6 of 13 (permalink) Old 8th November 2005
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I use a Yakumo sat nav,, same as the Mitac Mio 168,, it has a built in sat rec and i have no probs at all when it sits on the dash of my Lag (2001 dCi Authentique)

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post #7 of 13 (permalink) Old 8th November 2005
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Originally Posted by malarky
I am considering buying a Navman or Tom Tom Sat Nav system for my new Laguna Sport Tourer (incidentally its in Tornado blue and looks great!). I read somewhere that the French for some reason fit windscreens which contain metal and interfere with the GPS system? Has anybody got a Navman or a TOM TOM which they put in a Laguna and have you experienced any problems befor I go and splash a bit of cash?
Thanks in anticipation

Heat reflective (athermic?) screens can "block" some of the signal. Not all cars have them fitted, usually only the cars with climate control rather than manual air con. The best way to tell is to look at the windscreen from outside your car if it has a blue/purple look to it you have a heat reflective screen.

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post #8 of 13 (permalink) Old 8th November 2005
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I have a Ipaq 5550 with bluetooth gps that i have placed on the black area behind
the rear view mirror.
Works great.

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post #9 of 13 (permalink) Old 8th November 2005
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Hi all,
I have a BlueMedia sat nav from evesham .com external ariel is discrete and easily removed from car and satnav . It is also magnetic so is can be removed from any metal part of the car.
regards Harddrive .
Ps It also has mapping for the whole of western europe included in the model I have!
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post #10 of 13 (permalink) Old 10th November 2005
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Now here's a revelation (hold your breath...)

I used my GO 700 in my new car for the first time today. It's the first time I've strayed onto unfamiar territory since getting the car (at least the first time where wifey hasn't bagsey'd the TomTom first.)

It doesn't matter where I put it on the windscreen, it works fine! In the old car, it was practically useless unless it was precisely located or had the external aerial, but in the new car, it really doesn't seem to matter.

It strikes me that there are two possibilities:
1) Renault have dropped the heat reflective windscreen (if they're not fitting it on the Initiale, then I doubt they're fitting it on any of the others.)
2) They've come up with a new formulation for a heat reflective screen that allows GPS signals through.

I haven't checked for the purple tint yet, but always found this only gave itself away under certain lighting conditions anyway.

The best test would be to borrow a GPS device and see if it works. Failing that, I believe the reflective layer also blocks infra-red (as a result, infra-red toll tags have to be mounted in the dotted area on the Laguna.) So you could try watching the IR transmitter on an infra-red remote control using the a mobile phone camera. This should normally show up as visible white light on the camera (it's a handy way for testing suspected dead remotes too) but if the screen kills off infra-red light, the camera shouldn't be able to see it through the windscreen.

So, does anyone want to buy a TomTom 300/500/700 permanent mount kit? I think I might have one to get shut of in the not too distant future.
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Old 11th November 2005
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