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Re: [RFI] Bulb rumors.

To: <Jimk8mr@aol.com>, <rfi@contesting.com>
Subject: Re: [RFI] Bulb rumors.
From: "Dave Harmon" <k6xyz@sbcglobal.net>
Date: Mon, 29 Nov 2010 18:50:28 -0600
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Funny thing....my CFL's don't make any noise no matter who I listen to. 

Dave Harmon
K6XYZ[at]sbcglobal[dot]net
Sperry, Ok.


-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
Behalf Of Jimk8mr@aol.com
Sent: Monday, November 29, 2010 6:00 PM
To: rfi@contesting.com
Subject: Re: [RFI] Bulb rumors.

Last week I was doing some RFI detective work, focusing on 15  meters using 
an IC-R10 strapped to the end of a 4 foot pole. We did find  the source of 
the RFI (quite a different story, which I may post about later),  but in the

process I passed the radio near several CFLs, both the  regular sort and 
also CFL outdoor flood lights.  Within about a  foot of the bulbs I could
hear 
noise, but beyond that nothing. 
 
I have a number of CFLs around my house, and have not noticed any RFI from  
them.
 
The interesting thing about these bulbs is that it seems the more  time one 
spends listening to Rush Limbaugh, Glen Beck, or Fox News, the more one  
seems to experience RFI from them.
 
 
73  -  Jim   K8MR
 
 
 
 
 
In a message dated 11/29/2010 6:17:08 P.M. Eastern Standard Time,  
ingraham.ma.ultranet@rcn.com writes:

My  experience with CFLs is quite different from yours.  (I have  no
experience with LED replacements.)

> Noisey,  electrically

Not here, so far.

> and mechanically,

Not  that I've seen.
(Yes, I can detect a very slight hum from CFLs, and from  many
incandescents too.)

> degrade rapidly over
>  time,

Not here.

> have to have special housings or mounting  postitions to prevent the
> POS power supplies from cooking,

No  special housings here.

I've read about CFLs that cooked, but I haven't  had any do that yet.
Ours are barely above room temp.

I think this  issue may be a quality control problem, or perhaps lousy
circuit designs,  not a fault of CFLs per se.

> won't run when cold,

The ones I  stuck outside (NOT made for cold weather) work fine winter
and summer,  aside from needing a few seconds to reach normal
brightness in the  winter.

> take tens of seconds
> to several minutes to come up  to brightness,

The earliest CFLs I bought, about 20? years ago, do  that; but the rest
of them do not, except for the ones I put  outdoors.  Those start up
right away but take about 15 seconds to come  up to brightness on cold
winter nights.

> they cost 32 times what  they intended to replace,

They are fairly cheap here.  But I  haven't bought any in years ...
haven't needed to!

> can't be  disposed of as they are considered toxic waste,

That one is the Really  Big Problem.

> The Govt. is now creating another industry (CFL  disposal)

And their actions drove the remaining American incandescent  bulb
makers to close down.

My location is not free of RFI; but none  (ore very little) of it seems
to be coming from CFLs, and not from those in  my  home.

Regards,
Andy

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