[600MRG] RFI identified

[sbjohnston at aol.com]

I've had lots of noise trouble with light dimmer switches, touch-lamps, motion-sensing switches, and dusk-to-dawn photocell light controls.
The latter two devices seem to be prone to making radio noise if they use solid-state switching to the control the AC line power (SCRs, triacs, etc).  
Each time I found one of these noise-makers, I either added AC-line-rated bypass capacitors on the input and output lines (which usually helped but did fully eliminate the noise) OR I replaced the unit with one that uses a small relay to switch the power to the load (which eliminated the noise completely).

Link to one of my presentations on radio noise problems:
http://www.wd8das.net/Tracking-Radio-Noise.pdf
Link to video of live radio-noise presentation:
https://www.youtube.com/watch?v=giNo8c5lEFg


Steve WD8DAS   

sbjohnston at aol.com   
http://www.wd8das.net/   http://af4k-crystals.com/   
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Radio is your best entertainment value.   
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Mein Ohr ganz nah am Weltempfänger...



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