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Author Topic: Light Bulb RF Noise  (Read 25778 times)
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WA3VJB
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« Reply #50 on: April 16, 2007, 04:09:36 AM »

What's "Part 18 ?"
OK, found it.
• FCC Part 18 - Industrial Scientific Medical (ISM)

Just bought a few CFL's made in communist China and there's a label on there saying they comply with it, but that they also can generate RF noise from ".435-30Mhz," and that the bulbs should be kept a way from "critical maritime interests."

Will try to scan the label in, rather disturbing. 

Radios are NOT catching noise, so maybe it's boilerplate from the attorneys.

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N3DRB The Derb
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« Reply #51 on: April 16, 2007, 06:59:58 AM »

All hail to the greater glory of China.  Tongue
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WA1GFZ
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« Reply #52 on: April 16, 2007, 08:38:22 AM »

I bet it was scanned off a CD player tag and printed on the bulbs.
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Bill, KD0HG
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304-TH - Workin' it


« Reply #53 on: April 16, 2007, 12:41:56 PM »


  I remember a few comments made by Don stating about lamp dimmers sold at Home Depot, made in China, that were not marked as being Part 15 compliant.  Since they aren't marked as such, how do we know any effort was made to meet compliance with them.


Then there are those regulations concerning toxic material in foodstuffs shipped here from China...
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WA1GFZ
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« Reply #54 on: April 16, 2007, 02:43:12 PM »

ethics not high on their list since they are dealing with whores anyway
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WD8BIL
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« Reply #55 on: April 20, 2007, 09:46:11 AM »

Quote
I figured as much, that you were working in an RF Lab environment Bud.  But, what about companies like GE for instance, where RF emissions for many of the items they make, are incidental/unintended in nature.

There are other parts of CFR 47 that cover these Ellen. Part 18, Part 68 for example. It runs the gammet from air systems to zebra fa.... uhh... emissions !  Grin
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AF9J
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« Reply #56 on: April 20, 2007, 10:22:52 AM »

Good Morning Bud,

Thanks for the info.  As I mentioned in another post, it's looking like my noise is mainly powerline related (gotta love those 250 kV transfer lines!, especially when they're only 120 yards or so from where you live, and it rains, snows, or gets cold outside), and not related to CFLs.  Although, I am almost tempted to grab my FT-897D (I have an internal 4.5 amp-hr NiMH battery pack in it, and it's pretty portable), hook up a sniffer antenna, and walk the halls to check out the noise from the CFLs.

73,
Ellen - AF9J
Slaving away at work
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AF9J
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« Reply #57 on: April 20, 2007, 12:31:14 PM »

Bud,

You might want to take a look on e-ham, and add your 2 cents worth to the discussion, since you've done a fair amount of research on the noise issues with the CFLs.  They just started a thread this morning on CFL noise, and it's already pretty long.  Here's the URL:

http://www.eham.net/articles/16365

73,
Ellen - AF9J
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