[RFI] FW: Ignition Noise [Incident: 100111-000562]

Mon Jan 11 15:40:38 PST 2010

I purchased a `09 Scion (ne Toyota) with the understanding that Toyota inc was not too open with regard to RFI and how to cure it.
Wrote them a nice letter, they in turn replied with a nice THREE page letter addressing the situation and how to avoid the problem  Also suggested what side of the car and to run the DC wiring on along with and what parts of the car to avoid re RFI.
I was impressed with their response. 
Fwiw, have the letter on file in pdf format if other members of the list might need it.
73, Gary...wa6fgi

  ----- Original Message ----- 
  From: dgsvetan at rockwellcollins.com 
  To: Gary Smith 
  Cc: rfi at contesting.com ; David Jordan 
  Sent: Monday, January 11, 2010 2:53 PM
  Subject: Re: [RFI] FW: Ignition Noise [Incident: 100111-000562]

  Gary,

  It's no accident, but it is good news.  In reality, there are one or more 
  hams employed in the EMC department of most of the major auto makers. I've 
  had the privilege of meeting and knowing many of them over the years. 
  After all, RFI/EMC and ham radio all "sort of" go together, even if in 
  opposite directions!  BTW:  The concern extends beyond hams.  Keep in mind 
  that at various times over the years, the Detroit "Big 3" have all been 
  major suppliers of public safety vehicles, nearly all of which have 2-way 
  radios aboard.  These days, the Ford Crown Victoria is a mainstay police 
  vehicle, but I can recall the days when various Chevy and Dodge models 
  were pre-eminent.  (Dodge was big-time in police vehicles in the 60's and 
  70's.) 

  I don't know the extent of HF compatability in Detroit these days, but I 
  do know that for many years, several American-designed cars from the "Big 
  3" were rated for at least 200 watts on-board RF in the HF spectrum.  In 
  any event, YMMV with any given brand or model series, but at least some 
  vehicles were/are reasonably ham-friendly. 

  73, Dale
  WA9ENA
  Sr. EMC Engineer at Rockwell Collins

  "Gary Smith" <wa6fgi at sbcglobal.net> 
  Sent by: rfi-bounces at contesting.com
  01/11/2010 03:31 PM

  To
  "David Jordan" <wa3gin at comcast.net>, <rfi at contesting.com>
  cc

  Subject
  Re: [RFI] FW: Iginition Noise [Incident: 100111-000562]

  Nice to know they admit we hams exist and are helpful with the reduction 
  of RFI.
  73, Gary...wa6fgi

    ----- Original Message ----- 
    From: David Jordan 
    To: rfi at contesting.com 
    Sent: Monday, January 11, 2010 12:39 PM
    Subject: [RFI] FW: Iginition Noise [Incident: 100111-000562]

    response.

      _____ 

    From: DX Engineering [mailto:dxengineering at dxengineering.com] 
    Sent: Monday, January 11, 2010 2:23 PM
    To: wa3gin at comcast.net
    Subject: Iginition Noise [Incident: 100111-000562]

    Recently you requested personal assistance from our on-line support 
  center.
    Below is a summary of your request and our response.

    If this issue is not resolved to your satisfaction, you may reopen it 
  within
    the next 7 days.

    Thank you for allowing us to be of service to you.

     Subject

    Iginition Noise

     Discussion Thread

     Response (Bob)

    01/11/2010 02:23 PM

    Hello Dave,

    Thank you for writing.

    I have attached a link to the Ford Mobile Radio Installation Guidelines:
    http://www.fordemc.com/docs/download/Mobile_Radio_Guide.pdf that should 
  help
    you with your mobile installation and ignition noise reduction. The RFI
    Suppression Beads may help with your ignition noise. Often it is the 
  fuel
    injectors that cause the ticking interference and beads have helped in 
  some
    cases. Also, the coil or spark unit maybe treated with beads. Each case 
  is
    different, so you will need to do some experimenting on mobile noise
    suppression. Bonding the engine and the hood to the frame with tinned 
  copper
    braids may also help.

    The DX Engineering RFI Suppression Ferrite Snap Beads were designed to 
  offer
    the best coverage of the high frequency range. They come in 2 
  split-ferrite
    halves, in plastic case. So you can clamp them on any cable assembly. We
    have various sizes available for different cable diameters:
    http://www.dxengineering.com/Products.asp?ID=182
    <http://www.dxengineering.com/Products.asp?ID=182&SecID=152&DeptID=42>
    &SecID=152&DeptID=42. Larger sizes are capable of taking multiple turns 
  of
    the wire or cable. Each doubling of the turns of wire through the snap 
  bead
    increases the interference suppression by a factor of 4. However, it may 
  be
    that in your situation, you need more than one bead per line.

    We appreciate your interest in our products!

    Regards, 

    Bob Hajdak - N8QE
    DX Engineering Customer Support
    dxengineering at dxengineering.com
    Orders 800-777-0703
    Tech Support 330-572-3200
    www.dxengineering.com

     Customer (David Jordan)

    01/11/2010 01:58 PM

    I am very interested in learning how using SNAP-ON Ferrite Beads will
    eliminate ignition noise in the Ford Sport Trac truck I drive. Where 
  would
    I install the ferrite beads?

    Thanks,

    Dave

    Wa3gin

     Question Reference #100111-000562

    Date Created: 

    01/11/2010 01:58 PM

    Last Updated: 

    01/11/2010 02:23 PM

    Status: 

    Solved

    Order Number: 

    Phone or Fax Number: 

    [---001:001878:56990---] 

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