Have you considered 'Fuel Pump' noise. Fords are notorious for Fuel Pump
noise.
Deacon Dave, W1MCE
Rick Robinson wrote:
>
> 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
> ----
> Your Moderator: Dick Flanagan W6OLD, icom-owner@mailman.qth.net
> Icom FAQ: http://www.qsl.net/icom/
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