More info from Ed W1RFI and my apologies to Mike W1MG for
getting his call wrong (W1MB) in my previous post.
73, Bill W4ZV
---------- Forwarded message ----------
From: Hare, Ed W1RFI <w1rfi@arrl.org>
Date: Oct 31, 2007 1:14 PM
Subject: RE: [RFI] Testing & Comparing Compact Fluorescents?
To: Bill Tippett <btippett@alum.mit.edu>, "Gruber, Mike W1MG" <mgruber@arrl.org>
Cc: "Hallas, Joel W1ZR" <W1zr@arrl.org>
We did get a report from a member who found that when the put the
bulbs into his apartment, his noise went up. He found some were noisy;
some were not, and sent us two noisy ones and two quiet ones.
We are nearly done with a test fixture that will comply with the ANSI
C63.4 standard test method and we can then do some serious testing.
>From the preliminary results, Amateur Radio doesn't have a major
problem at hand, but some manufacturers may be noisy or quiet
manufacturers may have quality control issues.
We'll document formally in QST, but I don't mind if you share Mike's
and my preliminary conclusions with the list.
And Mike, sign up for the RFI reflector. There is good stuff there
and you will be able to make a contribution from time to time. I do
read the list as I have time, but if one wants to communicate with
ARRL staff, it is best to do so directly. We are "home" during normal
business hours, but not always at home on various lists and
reflectors. :-)
73,
Ed Hare, W1RFI
ARRL Laboratory Manager
225 Main St
Newington, CT 06111
Tel: 860-594-0318
Email: W1RFI@arrl.org
________________________________
From: 93bmwm5@gmail.com on behalf of Bill Tippett
Sent: Wed 10/31/2007 12:46 PM
To: Gruber, Mike W1MG
Cc: jrhallas@optonline.net; Hare, Ed W1RFI
Subject: Re: [RFI] Testing & Comparing Compact Fluorescents?
Thanks Mike! I copied your post to the RFI list. I know you included
it in your distribution but you are apparently not a member so it will
probably boune. Thanks again and I'll be looking for your results.
73, Bill W4ZV
On 10/31/07, Gruber, Mike W1MG <mgruber@arrl.org> wrote:
> Bill,
>
> We did indeed check a bunch of these CFLs for RFI. I went to the local
> WalMart and purchased several different brands and wattages for the
> experiment. We checked them with a LISN and at W1AW and found them to
> be very quiet.
>
> Since the testing was somewhat informal, and the levels we saw were way
> below the applicable FCC limits, we really didn't compile the data. The
> levels we saw were low enough that more formal testing didn't seem
> warranted. Just as an FYI, we'll be doing some more testing, probably
> in the first part of next year. We are presently improving our
> capability to measure conduced emissions per industry standards.
>
> Mike Gruber, W1MG
> ARRL Lab
>
> -----Original Message-----
> From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
> Behalf Of Bill Tippett
> Sent: Wednesday, October 31, 2007 9:49 AM
> To: rfi@contesting.com; jrhallas@optonline.net; Hare, Ed W1RFI
> Subject: [RFI] Testing & Comparing Compact Fluorescents?
>
> Repeat of October 21 post. Hello ARRL...anybody home?
>
> 73, Bill W4ZV
>
> WD3Q:
>
> >Question: has anyone done RFI field testing of CFLs? th e 60w
> equivalent seems to be quiet.
> The n:vision 75 watt equivalent was *very* noisy to my ear (never
> turned on a radio) when I turned it on.
>
> W1RFI reported preliminary results of RFI testing
> in the article below, but I've been unable to find the final
> test results in a web search:
>
>
> <http://dayton.contesting.com/archives//html/RFI/2007-10/http://www.eham
> .net/articles/16365>http://www.eham.net/articles/16365
>
> Does anyone know where ARRL's test results have been published?
>
> 73, Bill W4ZV
>
> P.S. I recently bought a 4-pack of GE CFLs at Wal-Mart,
> plugged one in and listened with my Sony 2010. Hearing an
> S9+ birdie on 1830 kHz, I immediately returned it to Wal-Mart.
>
>
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|