I grounded my exhaust system, no noticeable change. I have not bonded
my bed to the cab. I think that might be the most important parts to
complete. Once done the other things might be more noticeable.
My truck also has the new spark plug coil technology and I am not sure
there is a cure for that noise.
The noise blanker in the 480 works pretty well and I work lots of
stations mobile.
Mike W0MU
W0MU-1 CC Cluster w0mu.net
On 4/27/2012 10:31 AM, Jim Brown wrote:
> On 4/27/2012 8:17 AM, ukbrown@aol.com wrote:
>> I recently installed a IC 706G into my pick up with a heavy line from the
>> one of the 12vt batteries to the rig. Now when I transmit especially on
>> 40mtrs the engine starts to cut out even a higher RPM.
> I had comparable problems with a Toyota SUV -- my RF on 20M at 100W was
> getting into the computer that controlled the engine. I never took the
> time to fix it, simply because it would be a LOT of work to clean up
> body bonding, and mobiling is less important to me than adding to my
> antenna farm at home. :) .
>
> BUT, some suggestions.
>
> 1) Are you running one conductor or two to the battery? It SHOULD be two.
>
> 2) Have you tried serious ferrite chokes on that cable? For 80 and 40M,
> the choke should be 8-10 turns of the pair around #31 cores.
>
> 3) Have you tried a comparable choke at the base of the antenna?
>
> 4) I strongly concur with comments about bonding parts of the body
> together. The bonding on my Toyota is more or less non-existent.
>
> 5) I've heard for many years about the benefits of bonding the exhaust
> system at both ends to minimize transmission of noise from the engine
> compartment.
>
> 73, Jim K9YC
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