[RFI] VLF interference Re: CFLs and LEDs

David C. Hallam dhallam at rapidsys.com
Sat Feb 7 08:08:33 EST 2009

I just had another interesting experience with a CFL.  I have a lamp in 
the den with a CFL.  It is on a mechanical timer to come on in the 
evening and go off after about 5 hours.  Last night my wife was sitting 
near the lamp when it came on.  She called to me saying the light is 
smoking.  The electronic ballast unit was hot and smoking.  Now, no harm 
done other than scratch one CFL, but what if no one had been home when 
this happened.

This and their terribly short life are the reasons I hate CFL's.

"Another fine mess you've gotten us into Ollie" Whoops my mistake It's 
our government and Al Gore that got us into this.


Jim P wrote:
> I've noticed they 'do a number' on the VLF and LF spectrum; the
> band around 60 kHz WWVB comes alive with a number of
> carriers when running CFLs (as well as other SMPS!)
> JimP // WB5WPA //
> ----- Original Message -----
> From: "Adam Koczarski" <ka7ark at ka7ark.com>
> To: <rfi at contesting.com>
> Sent: Sunday, February 01, 2009 2:59 PM
> Subject: Re: [RFI] CFLs and LEDs
>> The only negative experience I've had with them is the noise they generate
>> on my home wiring. I use a lot of X10 controls in my home automation
> system
>> and the switch for my outdoor porch and garage lights don't run reliably
> if
>> I use CFLs in the fixtures.
>> Adam - ka7ark
>> http://ka7ark.com
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