[RFI] Dimmer Switch Help

Howard Lester hlester at dakotacom.net
Fri Mar 13 13:43:00 PDT 2009

Bob, I have a pocket SW receiver (Eton Mini 300PE) that's pretty sensitive. 
At the low end of the AM BCB I have to walk 15 feet away from the dimmer to 
eliminate the noise. Up at 1700 KHz the distance is 7 feet. But the top ends 
of all bands on this radio drops in sensitivity for some reason.

At 5.8 MHz (the bottom of the first shortwave band) the distance from the 
dimmer is maybe 10 feet before the noise is eliminated.

The Lutron dimmers I have... one uses a slider with a knob that is 
horizontal and oblong. There is a rocker switch below it. The assembly fits 
into a wall plate that has a 1-1/4" x 2-9/16" rectangular opening. The other 
dimmer is a pure standard toggle that has a tiny slider to the right of the 
toggle. The slider goes up and down and is practically touching the toggle. 
They seem to be equally effective.


> Thanks Howard.  Do they make noise  that you can hear on your radio in
> the HF range?  Usually dimmers interfere most on 160 and 80 meters,
> which is where I generally operate.  Bob

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