[time-nuts] EMI from florescent lights

Neon John jgd at johngsbbq.com
Fri Aug 10 21:03:07 EDT 2007

I've converted my entire house to CFLs.  I have probably half a dozen
radio-controlled clocks.  No problem with them.  No problem with operating my GPS
receiver indoors either.

The only thing that bothers my radio-controlled clocks is this Dell Inspiron 4150
laptop.  If I don't remember to turn it off at night then none of the clocks nor my
watch set themselves.


On Thu, 09 Aug 2007 22:11:19 -0700, Hal Murray <hmurray at megapathdsl.net> wrote:

>A bulb in a ceiling fixture just burned out.  Time to get out the ladder...
>Does anybody know how much garbage comes from the standard CFL "60 watt" 
>replacements for incandescent lamps?  I'm interested in both WWVB and GPS.
>WWVB is 60 KHz which is the 500th harmonic of 120 Hz.   500 is a big number, 
>so maybe that's not a serious problem.  I don't have any WWVB gear right now 
>so this part is just academic curiosity.
>On the other hand, that fixture is only 6-8 ft from a couple of GPS antennas.
John De Armond
See my website for my current email address
http://www.johndearmond.com <-- best little blog on the net!
Tellico Plains, Occupied TN
WARNING: Do not use this hair dryer in the shower!

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