[Lowfer] CFL Noise

[jrusgrove at comcast.net]

Banned here as well...along with light dimmers...and other switching devices 
that don't pass muster.

In addition to the fundamental in the 40 - 70 kHz range there are also 
harmonics that fall in more 'interesting' frequency ranges. Some of the 
noise components, even though not audible, can compromise an Argo 'noise 
floor'. Ridding the receiving setup of these and other noise generators is 
like peeling back the layers of an onion - a many step process. If your 
receiving setup is 'clean' enough you're likely to hear CFL noise at many 
frequencies...at least the ones I've tried.

I suspect the incandescent bulb manufacturers will not take this gov't 
mandated folly laying down. There will still be a need for rough service 
bulbs for ovens, fridges, drop lights, etc so they'll continue to crank them 
out...probably in all normal sizes and wattages. Might cost a bit more but 
they'll still be available. Of course there will also be an incandescent 
black market as well...

Gov't regulating light bulb usage. What's next? I hate to imagine...

Jay


----- Original Message ----- 
From: "n8tl" <n8tl at woh.rr.com>
To: "Lowfer" <lowfer at mailman.qth.net>
Sent: Tuesday, February 19, 2008 8:12 PM
Subject: [Lowfer] CFL Noise


> Currently.....CFL's are banned from my QTH by executive decree!!!  I guess 
> you would have to build a 40 to 50 khz band stop filter since these things 
> operate around 45 khz  according to some designers that I dealt with at 
> Home Depot.
>
> If it gets too bad....I can always revert to candles in the 
> shack.....har!!
>
> Regards,
>
> Tom N8TL
>
> _______________________________________________
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