[RFI] Start up Sound file...

[Roger (K8RI)]

On 10/9/2012 8:42 PM, KD7JYK DM09 wrote:
> I've heard this sound in the past and seen/heard a mercury vapor lamp used
> as a yard light produce this sound near a friends house a few years ago.
> When the light finally gets "hot" enough, as far as we could tell, it was
> winter, it stops flickering and this sound stops.

Those old Mercury Vapor yard lights are terrible while starting up and 
there are still quite a few around.  The ones I've heard usually last 
less than 5 minutes, but can wipe out just about everything around for 
most of that 5 minutes.

73

Roger (K8RI)


>
> I've also heard a similar sound from a failing/flashing LED streetlamp,
> although not as raspy.
>
> Kurt
>
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