Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Thread: Radio faceplate relocation - interference?

  1. #1
    Newbie
    Join Date
    Jan 2006
    Location
    Cyprus
    Posts
    28

    Radio faceplate relocation - interference?

    Just finished my BMW E46 carputer project and the last thing I have to do is move the radio faceplate from the trunk to the space near the handbrake.

    Due to lack of space, I had to relocate the aftermarket radio on the back, next to the carputer and then I planed to move the radio faceplate only in front.

    For this, Instead of using cat5 I used high quality shielded computer cable, for greater insulation. The problem is that the radio refuses to work when the wires are more than 1m in length, possibly due to interference? How can I overcome this?

    Any help greately appreciated!

  2. #2
    FLAC evandude's Avatar
    Join Date
    Mar 2005
    Location
    Maine
    Posts
    937
    Do you have the shield(s) of the cable(s) grounded?

    Also, it's quite possible that it's an issue of voltage drop/signal degradation on the wires, than an interference issue. to test it, you could try using the faceplate on long wires but having it outside of the car (cable leading out of the trunk, etc) where it should not be getting much external interference.
    But don't take it from me! here's a quote from a real, live newbie:
    Quote Originally Posted by Viscouse
    I am learning buttloads just by searching on this forum. I've learned 2 big things so far: 1-it's been done before, and 2-if it hasn't, there is a way to do it.
    eegeek.net

  3. #3
    And then I was mod. Tidder's Avatar
    Join Date
    Sep 2003
    Location
    New Mexico, USA
    Posts
    4,207
    Quote Originally Posted by paris
    ...Instead of using cat5 I used high quality shielded computer cable, for greater insulation...
    Why?

    I'd figure cat5 would have the least amount of resistance, which would let you run a longer distance. Could always get some shielded cat5.

    What the hell is high quality shielded computer cable anyway?
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

  4. #4
    Newbie
    Join Date
    Jan 2006
    Location
    Cyprus
    Posts
    28
    Here's how it goes:

    2 shielded cables each containing 8 wires go from trunk to handbrake space.

    starting from the tuner part in the trunk, 15 wires are soldered on the PCB in the tuner, then end in a male parallel port. there they connect with the wires soldered on a female parallel port which go below carpeting until the handbrake where another parallel port is connected. then another parallel port male this time, is used to connect the faceplate with the rest of the wires. The wires are also soldered on the pcb inside the faceplate. It's like having 2 connections. in order to be able to remove the tuner and the radio and at the same time leaving unaffected the cabling under the carpets.

    I'll ground the shielding to see if any good. I assume I must ground every single shielding, i.e. where the parallel port connections are, correct?

  5. #5
    And then I was mod. Tidder's Avatar
    Join Date
    Sep 2003
    Location
    New Mexico, USA
    Posts
    4,207
    Yeah, it's good to have all your shielding grounded.

    It still sounds to me though that your cable is dropping the signal quite bad, which leads me to think it's crap. I did this with an old Pioneer deck, and ran unshielded cat5 about 9ft which worked ok.
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

  6. #6
    Newbie
    Join Date
    Jan 2006
    Location
    Cyprus
    Posts
    28
    I'll ground the shields and see how it goes.

    This cable is thicker than cat5, due to thicker insulation and heavier shielding. 8 wires in it in twisted pairs just like cat 5, only that each wire, is composed of many copper lines, not a single line like cat5.

    It's even more expensive, $4.00 per meter..

  7. #7
    And then I was mod. Tidder's Avatar
    Join Date
    Sep 2003
    Location
    New Mexico, USA
    Posts
    4,207
    And it could always be that your HU is just not putting out enough juice to power it's face that far away.
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

  8. #8
    Newbie
    Join Date
    Jan 2006
    Location
    Cyprus
    Posts
    28
    the cable is 3m in length. I'll give it a try using UTP or STP and post the results.. thanks

  9. #9
    And then I was mod. Tidder's Avatar
    Join Date
    Sep 2003
    Location
    New Mexico, USA
    Posts
    4,207
    Sounds good. You got a link to the type of cable you bought?
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

  10. #10
    Maximum Bitrate yrean's Avatar
    Join Date
    Apr 2006
    Location
    Chicago
    Posts
    540
    yeah from what i just read it sounds like your getting a dropped signal and its not making it to the HU. as posted, try better cable. for 3m of cable, you would think you should have enough voltage, but it might be really low power since the face plate was designed to be right on the connections.
    MII12000 | 512MB PC3200 | 60GB 2.5" Samsung
    M2-ATX 160W PS | SlotLoad DVD/CDRW | BU353 GPS
    7" Lilliput 619 | WinTV | WIFI | Bluetooth
    Audigy2 ZS | HQCT | Kyocera KR1 Mobile Router(3G)
    Roadrunner | LSXvoid | IGuidance 3


    My Worklog

Page 1 of 2 12 LastLast

Similar Threads

  1. FAQ: EMI / RF Interference
    By aoLhaTer in forum The FAQ Emporium
    Replies: 7
    Last Post: 02-05-2008, 12:44 PM
  2. Remote faceplate! turned out really nice, check it out
    By Sporttracguy in forum Car Audio
    Replies: 62
    Last Post: 02-23-2007, 02:07 AM
  3. 6th gen accord radio relocation go or no go?
    By total-assault in forum Car Audio
    Replies: 4
    Last Post: 06-26-2006, 04:58 PM
  4. TM-701L converted Lilliput causes radio interference
    By archimense in forum LCD/Display
    Replies: 16
    Last Post: 07-04-2004, 09:14 AM
  5. Fm Radio
    By vicky_obee in forum Media Engine
    Replies: 9
    Last Post: 07-01-2004, 11:52 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •