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post #1 of 3 (permalink) Old 01-12-06, 04:01 AM
euro930@comcast.net
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am radio whine....850

i poised this problem a few months ago and received a number of fellow
owners expressing the same problem but no suggestion as what
specifically to do to solve the problem.
very early mornings, while attempting to listen to one of the clear
channel 50,000 watt clear channel am stations in the usa. i am bothered
by a constant whine which appears to be produced by the alternator as it
is engine rpm related. there has to be a tech out there that knows
exactly what to do to solve this problem. way back when, i recall, a
capacitor being hooked to the distributor was the way to solve this,
along with a trim on the antenna. i don't recall the exact positioning
or where the wire attached and the rear of my oem cd am fm radio has no
visible trim screw.
anyone know the answer to the above problem?

regards



 
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post #2 of 3 (permalink) Old 01-12-06, 07:01 AM
Mike F
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Re: am radio whine....850

euro930@comcast.net wrote:
>
> i poised this problem a few months ago and received a number of fellow
> owners expressing the same problem but no suggestion as what
> specifically to do to solve the problem.
> very early mornings, while attempting to listen to one of the clear
> channel 50,000 watt clear channel am stations in the usa. i am bothered
> by a constant whine which appears to be produced by the alternator as it
> is engine rpm related. there has to be a tech out there that knows
> exactly what to do to solve this problem. way back when, i recall, a
> capacitor being hooked to the distributor was the way to solve this,
> along with a trim on the antenna. i don't recall the exact positioning
> or where the wire attached and the rear of my oem cd am fm radio has no
> visible trim screw.
> anyone know the answer to the above problem?
>
> regards


The capacitor went on the alternator - and the secondary side (high
voltage) of the ignition had some resistance added. You can see if the
noise is caused by the alternator by removing the drive belt and seeing
if the noise disappears. If all your ignition parts are original, and
the alternator is not the problem, then you need to look for resistance
in ground connections.

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
post #3 of 3 (permalink) Old 01-13-06, 08:01 AM
bfiske
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Posts: n/a
Re: am radio whine....850

Check for a bad ground on your antenna.

euro930@comcast.net wrote:
> i poised this problem a few months ago and received a number of fellow
> owners expressing the same problem but no suggestion as what
> specifically to do to solve the problem.
> very early mornings, while attempting to listen to one of the clear
> channel 50,000 watt clear channel am stations in the usa. i am bothered
> by a constant whine which appears to be produced by the alternator as it
> is engine rpm related. there has to be a tech out there that knows
> exactly what to do to solve this problem. way back when, i recall, a
> capacitor being hooked to the distributor was the way to solve this,
> along with a trim on the antenna. i don't recall the exact positioning
> or where the wire attached and the rear of my oem cd am fm radio has no
> visible trim screw.
> anyone know the answer to the above problem?
>
> regards
>

 
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