[amsat-bb] Automobile Noise
BobsImsai8800 at aol.com
Wed Apr 15 09:57:46 PDT 2009
Hi all -- some facts I have learned about automobile noise after 40 years
in the profession.
DEALER FIX: While dealing with many different professional
communications users, I found that the automobile industry usually has a kit to fix most
RF and electrical noises that are generated by the auto and with problems
that the auto has with RF interference getting into the circuits.
REASON -- It is cheaper to provide the equipment to fix the autos that
have a problem due to installed communications equipment, than to install the
fix on millions and millions of autos that don't need it.
SOLUTION -- I always told the customer to check with the dealer to find the
proper fix -- it usually took a manager and up the chain to a district
manager for a fix. And now we have Google and the Internet, which makes
finding these fixes easier.
Of course the new Hybrids have a whole new set of problems and solutions.
Side note -- the diesel and the 2007 trip to Dayton: One would think a
diesel is very quite - no ignition and no electric fan on the radiator.
Wrong -- the electric injector pump on the 1997 Ford F350 had 20 over S-9 noise
when we put the radio in it. My F150 with a V6 gas engine has no noise,
but it was S-9 noise when just parked next to the diesel. Google RF noise on
the Ford diesel -- there are some solutions.
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