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[RFI] Update on Toyota 4 Runner

To: <rfi@contesting.com>
Subject: [RFI] Update on Toyota 4 Runner
From: wrt at dslextreme.com (Bill Turner)
Date: Sat Aug 2 13:02:58 2003
On Sat, 2 Aug 2003 09:39:17 -0500, "Mel Crichton" <kj9c@iquest.net>

>adding any value of
>capacitor either before or after the choke only increases the noise... but
>it's still the worst of the 3 noise sources I found... any hints for the


Depending on the circuit, adding a capacitor alone may just shift the
resonant frequency of the associated wiring.  Try adding a capacitor
with a small value resistor in series with it, about 50-100 ohms or
so.  The resistor will absorb the stray RFI much better than a
capacitor alone.  If you find it makes an improvement, temporarily
connect a potentiometer of the appropriate value and vary it while
someone listens for minimum noise.  When you find the "sweet spot",
replace the pot with a resistor of that value.

73, Bill W7TI

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