[RFI] Light Dimmer

[Gary Johnson]

I will do an FCC part 15 pre-qualification conducted emissions test next 
week on a new dimmer that I have on hand, a Lutron DVCL-153P. An quick 
informal test last year using my trusted DFing antenna and SW receiver 
proved that it is very quiet on 40 and 20m with an incandescent load. I 
did no other testing at that time.

With an LED light fixture as a load I found, by measurement of 
common-mode noise, that conducted noise current from the fixture was 
roughly proportional to the dimmer setting.

My RFI web page has formal test reports on various LED light bulbs and 
other devices. I have found that screw-in bulbs are, as a rule, very 
quiet, with GE and Feit being the best measured. I have yet to find an 
LED light *fixture* that is even remotely acceptable.

http://wb9jps.com/Gary_Johnson/RFI.html

-Gary NA6O