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@sbcglobal.net>
Sent by: rfi-bounces@contesting.com
01/11/2010 03:31 PM
To
"David Jordan" <wa3gin@comcast.net>, <rfi@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@contesting.com
Sent: Monday, January 11, 2010 12:39 PM
Subject: [RFI] FW: Iginition Noise [Incident: 100111-000562]
response.
_____
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
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@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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