[RFI] LED lighting

[Hare, Ed W1RFI]

We haven't done any of that sort of thing, David.  It's hard enough to find the time to test the products we test.  Unfortunately, there is probably little that can be done about such QC problems. FCC is hard pressed to act even for blatant rules violations like the grow lights, though we aren't letting that bone go.  There is no way in the world we can approach FCC and say that there may be problems. Their take is that if there is the occasional failure, it should be addressed on a case-by-case basis.   The manufacturers aren't even known in some cases, and the distributors won't care because they are not getting enough returns to warrant any concern.

-----Original Message-----
From: qrv at kd4e.com [mailto:qrv at kd4e.com] 
Sent: Monday, July 27, 2015 11:19 AM
To: Hare, Ed W1RFI
Cc: rfi at contesting.com
Subject: Re: [RFI] LED lighting

Does the ARRL perform aging-simulation tests?

Many of us have experienced heat-fatigue and/or vibration fatigue failures in poorly-soldered connections - especially since the era/error of lead-free solder - not to mention poor quality components that fail early - these experiences are across a variety of Chinese-built products.

The concern is that a new-off-the-shelf device may appear fine vis-a-vis RFI today and become a nuisance a month or a year down the road.

Just curious ... David KD4E

> I bought one multi-LED bulb that came from China.  It was dead quiet.
> My guess is that it simply put the LEDs in series and connected them 
> to the line.  Not all of them will have a switcher in them.
> 
> ARRL tested a number and found them to be below the conducted 
> emissions limits. I want to test them above 30 MHz too, for radiated 
> emissions, though we'd need to set up outdoors to prevent scatters 
> from throwing off the readings.
> 
> 
> Ed Hare, W1RFI ARRL Laboratory Manager 225 Main St. Newington, CT
> 06111 Tel: (860) 594-0318 Fax: (860) 594-0259 Email: W1RFI at arrl.org
> Member: IEEE Connecticut Section Member: IEEE EMC Society, Board of 
> Directors Member: IEEE EMC Society Standards Development and Education 
> Committee Primary representative:  ANSI ASC C63 EMC Committee, Vice 
> Chair Subcommittee 5 (Immunity) Member: QRP Amateur Radio Club 
> International, Board of Directors


-- 

*David* KD4E
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