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

To: <dgsvetan@rockwellcollins.com>
Subject: Re: [RFI] FW: Ignition Noise [Incident: 100111-000562]
From: "Gary Smith" <wa6fgi@sbcglobal.net>
Date: Mon, 11 Jan 2010 15:40:38 -0800
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
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@rockwellcollins.com 
  To: Gary Smith 
  Cc: rfi@contesting.com ; David Jordan 
  Sent: Monday, January 11, 2010 2:53 PM
  Subject: Re: [RFI] FW: Ignition Noise [Incident: 100111-000562]


  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 

  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
  Sr. EMC Engineer at Rockwell Collins


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

  "David Jordan" <wa3gin@comcast.net>, <rfi@contesting.com>

  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@contesting.com 
    Sent: Monday, January 11, 2010 12:39 PM
    Subject: [RFI] FW: Iginition Noise [Incident: 100111-000562]




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


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

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

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


    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 
    you with your mobile installation and ignition noise reduction. The RFI
    Suppression Beads may help with your ignition noise. Often it is the 
    injectors that cause the ticking interference and beads have helped in 
    cases. Also, the coil or spark unit maybe treated with beads. Each case 
    different, so you will need to do some experimenting on mobile noise
    suppression. Bonding the engine and the hood to the frame with tinned 
    braids may also help.

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

    We appreciate your interest in our products!


    Bob Hajdak - N8QE
    DX Engineering Customer Support
    Orders 800-777-0703
    Tech Support 330-572-3200

     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 
    I install the ferrite beads?





     Question Reference #100111-000562

    Date Created: 

    01/11/2010 01:58 PM

    Last Updated: 

    01/11/2010 02:23 PM



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    Phone or Fax Number: 




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