[VHFcontesting] Spark Plug Noise on F150

[Tim Marek]

I too am having a considerable time elimating Spark Plug noise.

Local mechanic changed out aging wires with supposedly noise
suppresion wires and split fire plugs which rendered all radio
in the vehicle useless. All attempts to get him to return my ROVER
vehicle to it's previous quiet state have met strong resistance.

I am now ready to just do it myself and need the info on those
noise suppresion wires mentioned in earlier posts.

I have aquired 2 new bands - 222 and 1296, and would really
like to try them out before Aug UHF contest gets here! Any help
would be appreciated.

Thanks!

73s de Tim - K7XC/R - DM09ol... sk


----- Original Message -----
From: "Rick Robinson" <k8dxn at charter.net>
To: "vhf" <vhf at w6yx.stanford.edu>
Cc: "Icom" <Icom at mailman.qth.net>; "50 MHZ" <50mhz at mailman.qth.net>;
"PackRats" <packrats at qth.net>; "Rover" <rover at mailman.qth.net>; "VHF
Contesting" <vhfcontesting at contesting.com>
Sent: Saturday, June 29, 2002 4:19 PM
Subject: [VHFcontesting] Spark Plug Noise on F150


> I am having a good bit of spark plug noise come in on my radio and I
> would like to hear from those who have solved or reduced the intensity.
> Here is what I have and what I have done.
> 95 Ford F150 with the 300ci straight six and manual tranny.
> Icom 706MKIIG/with amps for 2&432
> Par omnis for 6,2,&432 and an sgc230 and sgc303 whip bumper mtd.
> LMR 400 cable.
>
> I have cleaned the battery grounds and grounded the tailpipe with strap.
> New Ford OEM plug wires and Autolite platinum plugs.
> Better quality (copper inserts) cap and rotor button.
> New radio suppression condensor at coil.
>
> The plug noise is only present when the ant. is connected.
> HF is worse than V/UHF.
> Opening or closing the hood makes little or no difference.
>
> I would like to stop the noise at the source which essentially is the
> plugs and/or the wires.
> I would mainly like to hear from those with the same type vehicle or
> motor who have
> addressed this problem before.
> Spark plug testimonials.
> Plug wire testimonials, Yes I have heard of Magnacor wires but have they
> really worked on this
> motor? And with what plugs? A lot of money to experiment with on
> wires($100).
> Contrary to most beliefs the noise blanker in my 706 works well on my
> spark plug noise
> on most all bands, but I want the noise out before the blanker.
>
> I welcome all advice and comments and I think this will be a good thread
> for all of us
> to learn something from our collective experiences.
>
> Many thanks to all, 73 and see you on the radio.  Rick  K8DXN
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