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Thread: epia m10k + lilliput => gps blocker?

  1. #21
    Newbie
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    May 2004
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    ok, I tried grounding the cable, and it didn't help. I'm thinking the lcd monitor is the prime suspect here.

    So anyone know how to ground or shield this monitor? Thanks!

  2. #22
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    can't you try to tape the vga cable with alu-tape?

    maybe first wrap some thin paper (or something else) around the cable before you tape it... so that if it didn't help it can be taken of easely.
    if it does help take all of and tape it again with just the alu-tape so it lasts forever

  3. #23
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    got a maybe better idea
    due to the fact that most alu tape is a few cm's width you take the same length as your cable is long. put it on the floor with the sticky side up :-) then place a less width lenght of paper (the same width as the the cable is round)
    then place the cable on the paper and put the alu tape borders together

    this way you can take it off the cable very easy
    and maybe there are shielded cables factory made :-)

  4. #24
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    what's alu tape? aluminum tape?

    I'm inclined to think that the LCD monitor is the cause here. Someone suggested the CCFL light(backlight) inside the monitor causes the interference. It seems to be logical, because the backlight would only turn on when there's vga signal going into the lcd. If I turn the lcd off, there should still be signals traveling inside the vga cable and the gps would be okay.

  5. #25
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    Found the real problem and solution

    Well, I finally found the problem, and I'm ****ed at how simple of a problem it is and how much headache and time it costed me.

    But at least it's working now. Believe or not, the interference is caused by the refresh rate of the LCD. When my LCD is set to 85Hz, it creates interference that can even be seen on the LCD sometime. But since it was really minor, I didn't pay too much attention to it. When I adjust the refresh rate down to 60 Hz, the interference is gone, and long and behold, the GPS signal is much much more stable. Why or why didn't I think of this earlier?

    I think this explains why some other people who have the same hardware setup with me but no problem for them. So don't try to use the highest refresh rate on your Lilliput!! I hope this would be helpful to people that are having "interference" problems.

  6. #26
    Raw Wave Laidback's Avatar
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    Quote Originally Posted by NaFooEsi
    Well, I finally found the problem, and I'm ****ed at how simple of a problem it is and how much headache and time it costed me.

    But at least it's working now. Believe or not, the interference is caused by the refresh rate of the LCD. When my LCD is set to 85Hz, it creates interference that can even be seen on the LCD sometime. But since it was really minor, I didn't pay too much attention to it. When I adjust the refresh rate down to 60 Hz, the interference is gone, and long and behold, the GPS signal is much much more stable. Why or why didn't I think of this earlier?

    I think this explains why some other people who have the same hardware setup with me but no problem for them. So don't try to use the highest refresh rate on your Lilliput!! I hope this would be helpful to people that are having "interference" problems.
    Good find!

  7. #27
    Constant Bitrate Goddy's Avatar
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    I have the same problem, but its a bit more complex then just adjusting the refresh rate. When i set it to 60 hz, i still have the problems, but a bit less. I get the best results when using 75Hz. But i got a signal loss every few minutes, and when i poweroff/poweron the lilliput i have signal. After a few minutes its gone again.

    But i have found only one place in the car for the gps to work without any loss of signal.

    where ever i put the gps unit, i get a loss, but when i put it on the airbag 'unit' for the passenger i have lock all the time. I thought it had something to do with a magnetic field, because that was the only place i;ve had a magnetic field.

    Because i didnt like the setup with the gps unit right on the dash with all the cables i found i better to hide is somewhere. I found a place under the dash on top of the frame with a very great magnetic lock. There is a big metal plate between the lcd and the gps unit. When i have lock, i have a very very good lock on sats. But i got the interference problem again.
    Its weird that the only good spot seems to be on the airbag, but i actually dont want that.

    When i put the gps unit in the back its working ok, but i dont have great lock there (but no interference with the lilliput lcd).

    What can i do, even 60hz isnt working for me :/

  8. #28
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    Mar 2008
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    gps jammer introduction

    this company is running gps jammers, prices are sharp

  9. #29
    Variable Bitrate
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    Feb 2006
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    249
    I've got the same problem here... and I have tried all available refresh rates already
    Has anyone got any suggestion?
    Thanks.

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