[ICOM] Help needed with noise on HF in the mobile

[Des Pendergast]

Hello Randy and others,

I would say that it is looking like I'll have to aim for as best as I
can get.  Maybe that a braided strap on the hood may do some good.  I
had naturally assumed that the good would be grounded already but then
thinking about the hinges it uses, I should have known better.

I don't think it's fuel pump noise.

Des.

----- Original Message ----- 
From: "Randy" <retired at easystreet.com>
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Sent: Friday, June 02, 2006 9:15 AM
Subject: RE: [ICOM] Help needed with noise on HF in the mobile


> Des:
> In general, these days the recommendations for most any vehicle are:
> Start by grounding, with some braid, the tailpipe, both near the
engine
> and at the back end.  Then use braid to ground the hood, trunk (or
> hatchback) and doors.  That is about all you can do with modern
vehicles
> but should help quite a bit.  If you have a hash noise it is often the
> electric fuel pump, whose motors apparently use designs based on old
> spark transmitters(!).  A ferrite filter in the power lead, located as
> close to the pump as possible, should help if you have that problem
> (some people do and some don't).  After you have done all that you
will
> probably be about as good as you are going to get.
>
> de Randy, W7HR
>
>
>
>
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