One thing that may help motivate them is to point out that a ballast that
has started making radio noise is probably failing and may melt down
completely at some point. It may also be good to suggest upgrading the bad
ones to LEDs to save energy in the process.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373
-----Original Message-----
From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Stephanie WX3K
Sent: Saturday, July 30, 2016 17:30
To: rfi@contesting.com
Subject: [RFI] Flourescent lighting
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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