[RFI] Noise in 2007 RHS-TV

[Rick Karlquist]

kd4e wrote:
> It must have had a discernible source.  Were you
> certain it was from the ignition vs some other
> source?

Of course there is no "ignition" in a diesel.  However,
the noise was definitely "throttle" related.  It went way
down when I lifted my foot off the accelerator pedal.
I figure that when I put the hammer down, the fuel injection
solenoids were turned on for the maximum amount of time
producing maximum RFI.

(The speed control in a diesel is technically not a "throttle,"
which is a variable air valve, but you get the idea).

Rick N6RK


>
> Perhaps something freewheeling for the hydraulics
> or something?
>
> Just wondering as I am always curious!  :-)
>
>> I rented a diesel flat bed truck once to move a tower.
>> The diesel "ignition" noise was so gawdawful I couldn't
>> even listen to the broadcast radio in the truck, even
>> on FM!  The noise is not impulsive like real ignition
>> noise so it probably doesn't blank well.
>> Rick N6RK
>
> --
>
> Thanks! & 73, doc, KD4E
> Personal: http://bibleseven.com/kd4e.html
>
>