On 27 Sep 2002 at 15:00, William G. McDowell wrote:
> Has anyone experienced RFI from these new LED traffic lights? I live about
> 800' from an intersection that has several of them. A broad band RF
> emission is radiated when the red and green lights are illuminated. The
> noise stops when yellow (caution) is lit as the lights change.
I think that if you examine the traffic light from close range you
may find that the yellow light is not an LED; but, still an
incandescent blub.
Yellow LED's are not yet approved in many states.
Thus the noise is only being generated when the LED's are in
operation.
73, Dave, N3EOY
mailto:daveh@erie.net
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