Is there a good source of "older style transformer ballasts"
to retrofit modern fixtures?
We have florescent fixtures throughout our new house
located over each window, purchased from Lowes and
Home Depot, so I'd guess they are all using the newer
noisier ballasts -- and if not noisy now will get that
way.
Thanks! doc
>> So I wonder if the cause of the RFI is really the
> flourescent LIGHT (BULB)
>> itself OR maybe it's the electronic ballast?
>
> It is the ballast. Flourescent lamps generate a tiny amount
> of broad spectrum RF energy from non-linearity in the
> plasma, but it is very small.
>
> Newer electronic ballasts are horrible. My newer shop lights
> (I have about 32 dual 40-watt fixtures) generate all sorts
> of RF trash including harmonic-rich AC modulated carriers
> that move around as well as 120 Hz broadly frequency
> selective buzzing. That noise is detectable hundreds of feet
> from my shop.
>
> The very same lamps swapped into older style transformer
> ballasts impact sensitive receivers only when the antenna is
> within a few feet of the lamp.
>
> 73 Tom
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Thanks! & 73, doc kd4e
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