My experience with two [a small sample] of street lamps, both owned by
the State of California [CALTRANS], is that the lamps don't really
matter much, it's the controllers ... what we used to call ballasts but
that's archaic now.
One appeared to be a fairly old high-pressure sodium vapor lamp, and it
emitted a steady buzz centered on 6 Mhz and spread from about 3 Mhz to 8
Mhz. It was about 3 km away and ran about S5-S6 on my K3. A similar
lamp maybe 4 km distant emitted nothing.
The other was what I believe a low pressure lamp. It's problem was that
it was failing ... very, very slowly ... and the controller [or ballast,
your choice] would emit sharp spikes in a spectrum that ran from 160
through 17 m as it continually tried to restart the lamp.
After multiple contacts to my state government, I gave up and we finally
moved [not because of that :-)]. The failing one has not yet died, saw
it last time through Auburn ... it does this day and night.
You might want to point your Association to 47CFR15, and their
responsibility to prevent interference to licensed services. They might
care about that, CALTRANS never did.
73,
Fred K6DGW
Sparks NV
Washoe County DM09dn
On 6/9/2016 2:43 PM, KarlErb wrote:
My condo association is planning to replace 1960's street lights to
reduce energy usage. Is there a reference or two that would help me
educate our Board on best technology and why RFI should matter to
them (right now, it doesn't)?
Thanks for any input.
Karl W3BF karlerb7 at gmail dot com
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