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GPS's that work through windscreens

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  • GPS's that work through windscreens

    Hi,

    i ordered another GPS reciever the other day, and it wont work inside the car, reception is really bad and it just wont find enough satellites.

    am i going wrong somewhere with the ones i have tried?
    so far ive tried these two...

    http://linitx.com/product_info.php?c...roducts_id=548
    and
    http://www.fortuna.com.tw/u2.htm

    now i know that my windscreen works with gps, as my friends bluetooth one used to work fine, as does the cabled tom tom gps for pda's. i cant work out why neither of these worked properly

    anyone help me?

  • #2
    My Holux 231 (bluetooth) works through my windscreen.. but then.. mine isn't tinted --metalic or otherwise
    •Micke

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    • #3
      mine shouldnt be metalic or heat reflective. and any tint on it is a standard factory tint.

      signal is bad on rear window too.

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      • #4
        if you look at the windscreen from an angle is there a blue tint to it?
        i have a bu-303 with no tint and it works fine.
        Audio: Alpine PXA-H700 DSP, Rockford Fosgate Punch P4004 amp, P152S Comps and Alpine SWR-1242D Sub
        PC: BU-303, SB Audigy 2 ZS, Jetway 1.5Ghz, Cubid case, M2-ATX PSU, New 700tsv
        Toys:K8055 relay board, Elmscan OBDII

        Type-R Mini

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        • #5
          Originally posted by Jaz
          mine shouldnt be metalic or heat reflective. and any tint on it is a standard factory tint.

          signal is bad on rear window too.

          Factory tint can effect the signal.

          This is not necessarily your receivers fault. While it may not be the most sensitive, it may not make a difference HOW sensitive it is, because of the windshield and the tint. Also realize that any type of seperation between the receiver and the signal will cause a signal degredation. Even though you can see through the winshield, that doesn't mean that the signal can make it through. Think of it this way, the GPS receiver is a an ear, and the signal is a sound wave (yes, all signals are waves, so they act in relatively the same way) While I can see through the windshield (light waves can penetrate because of thier very high frequency) sound waves may not penetrate (because of thier lower wavelength) so I may not be able to hear it. The same with your GPS receiver, the ear cannot hear the signal, even though you can see through it. Additionally, the angle of the windshield in relation to the signal source (could even be based on your location in the US) can affect the signal.

          Try moving the receiver to the back shelf under the rear window (where there may not be any tint, factory or otherwise, and it has a different angle as well). See if that helps. Also, try outside the car. Unfortunately, there may not be a way to get the receiver to work inside your car. Also, another receiver probably won't make a difference, unless is it more sensitive, and from what I can see, there are only 2 common receiver ships, and they only differ by about -10db of sensitivity. While that may make the difference, it isn't a FAR superior receiver, just better.

          Michael
          ...I love the French language...especially to curse with...Nom de Dieu de putain de bordel de merde de saloperies de connards d'enculés de ta mère. You see, it's like wiping your *** with silk, I love it.

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          • #6
            as i said, i know its not the windshield as other gps's (at least 4) have worked without a problem.

            tried it on rear parcel shelf, signal is till poor on this 2nd unit, was better on the first one but still not acceptable really.

            guess i will just have to keep buying them till i find one that works...

            Comment


            • #7
              Originally posted by Jaz
              as i said, i know its not the windshield as other gps's (at least 4) have worked without a problem.

              tried it on rear parcel shelf, signal is till poor on this 2nd unit, was better on the first one but still not acceptable really.

              guess i will just have to keep buying them till i find one that works...

              Then get one of the 4 that worked, and give back the ones that don't.

              EDIT: Just realized, the ones that worked were not USB powerd, but powered by other means (BT has batteries, and the PDA version might be powerd internally, or by the PDA. You may have power issues powering the receivers, making them "deaf". Try them with a another computer, preferably with a different MB. It can be a laptop if you like. It is possible the low power is a result of the USB Bus on the MB you are using, or because of the PS you are using, not supplying enough power. Are you using a DC-DC, or an AC-DC? What MB are you using.

              Michael
              ...I love the French language...especially to curse with...Nom de Dieu de putain de bordel de merde de saloperies de connards d'enculés de ta mère. You see, it's like wiping your *** with silk, I love it.

              Comment


              • #8
                good thinking.
                i thought it would either work, or it wouldnt though.
                i will it on a laptop in my car...

                as u say tho, cant used the other types.. bluetooth isnt an option, and the pda ones dont support usb i dont think.

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                • #9
                  damn. just tried it on a laptop. it worked fine.
                  same drivers etc.

                  Right... im running a P4 motherboard, a Jetway pm9ms or something, with a 2.5ghz celeron. and an opus powering it. the only things i have on the 5v rail are the cd rom drive. and then i have the touchscreen usb connector.

                  Comment


                  • #10
                    I mounted my BU-303 on a small 4"x4" zinc plated (zintec) sheet (to stop interference from the cars electrics) under my sunroof (on top of the blind) and it worked great with a min of 7sats even through the glass, which has a very thin metal mesh on the inside, yet it wouldn't work under the screen with more than 4 sats. Try and mount it somewhere else... Seal it with some Sikoflex or something and whack outside of your car and it'll work miles better!
                    My Nissan 200SX @ Silverstone
                    NOW SADLY WRITTEN OFF!

                    My Car's spec list + pics

                    Stealth CarPC fab'ing...

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                    • #11
                      ive got a 206. no sunroof, only options are front or rear screens )

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                      • #12
                        try putting it inside the front bumper so its just out in front of the bonnet. It should work fine through the plastic bumper, as long as its not metal powder re-enforced plastic which I doubt. You could also look at sticking it inside the rear hatch lip spoiler if you have one...

                        Only other option would be to just sling it out the window and onto the roof

                        Time to get creative with this one me thinks...

                        Maybe it would go under the trim near the wipers without too much trouble!?!

                        Most important thing is DON'T GIVE UP
                        My Nissan 200SX @ Silverstone
                        NOW SADLY WRITTEN OFF!

                        My Car's spec list + pics

                        Stealth CarPC fab'ing...

                        Comment


                        • #13
                          I have a Garmin GPS16 and it gets great reception even from inside my house.
                          IEI PSB-4710, 1.5Ghz P4, 1GB RAM, 120GB HDD, Lilliput 8" TS, M2-ATX, BU-353,
                          Ikey SL75 keyboard, BT Mini Keyboard, WLAN, EVDO, IC-PCR100 (AM/FM/VHF), HQCT, Centrafuse 1.6...

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                          • #14
                            I have a Haicom 204s and my buddy has a Haicom 204e LINK and inside the car in the rear windows with 20% tint we pick up between 7 - 9 sats and if I take it and just throw it in the back seat I'm still picking up 5 - 7 sats. I'm very happy with it, but don't believe the waterproof claims.... it's not! The Haicom 204e after a few rainstorms has a fair amount of condensation in it.

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                            • #15
                              Iogear Gps

                              The one my company produces works well through windshields. We also offer a detachable external antenna that you can temporatily affix to the outside of your car so you can keep the GPS in your glove box.

                              http://www.iogear.com/main.php?loc=p...Item=GANTGPS01

                              (I'm new here an not sure about shameless plugs on this board so please excuse/advise if I'm breaking any rules)

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