[RFI] Flourescent lighting

Michael Clarson wv2zow at gmail.com
Sat Jul 30 14:10:21 EDT 2016

If you are going to buy filters, be sure to check the voltage. Lots of
commercial lighting is 277 volt. --Mike, WV2ZOW

On Sat, Jul 30, 2016 at 1:29 PM, Stephanie WX3K <wx3k at ptd.net> wrote:

> I have a number of local businesses that have VERY noisy indoor flouescent
> lighting fixtures. The noise propagates very well on 50 MHz. I have one
> business that I have visited on numerous occassions that I verify there is
> one string of lighting in their store that completely obliterates 6 meters.
> The business is .25 miles away and the noise when I swing the beam that
> direction is horrendous.
> I am going to chat with the owner again to see if they are open to having
> additional mitgation on the lighting like adding EMI filters. I feel this
> is the only way to resolve this. Perhaps they do in fact have a defective
> ballast or two but I think trying to pin down the noisy ballast in that one
> string will allow me to get rid of this issue once and for all.
> Any suggestions on EMI filtering ? I have used some outboard surplus
> CORCOM filters on my house flourescent to get rid of this issue and have
> rewarding success.
> Stephanie WX3K
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