The ARRL (American Radio Relay League, the US national ham radio club) has its own shielded enclosure and EMI lab. They have recently tested agricultural "grow lights" and have found almost every sample exceeds CE limits (some by almost 60 dB). After no success in solving this condition with the manufacturers, the ARRL has submitted their data to the FCC and asked for recalls of the offending models. Hams also report problems with the switching power supplies associated with commercial LED light bulbs.
It will be interesting to see how the FCC reacts to a request to recall large volumes of consumer products; as far as I know, the last time the FCC was faced with controlling a large and uncaring market was back in the CB radio era of the 1970’s, and that didn’t work out very well at all. Ed Price WB6WSN Chula Vista, CA USA -----Original Message----- From: CR [mailto:k...@earthlink.net] Sent: Thursday, October 15, 2015 6:27 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] SV: [PSES] Stricter limits than legal (CISPR11, IEC, etc,) Where? On 10/14/2015 10:25 PM, Ted Eckert wrote: > > It is fairly common to run into issues where one product causes > interference where it shouldn’t. > > <http://www.compliance-club.com/archive/old_archive/Bananaskins.htm> > http://www.compliance-club.com/archive/old_archive/Bananaskins.htm > Do note that the archive only covers up to 2004. I've had occasion to cite entry 3. I suspect the relative scarcity of reported problems may be ascribed to proactive standards that are revised when the need becomes evident; one reason I got a contract in 2004 -- and why it was extended. Those of us who are Amateur Radio operators will have perhaps gotten involved in the myriad issues of new technology versus existing. I filed comments in the FCC's rulemaking on BPL (UK:PLT/PLC), which agency in the past has acted as if it had gotten orders to ignore some kinds of complaints -- a non-technical issue, eh? Some complaints answer the "why margin?" question, if possibly for a different reason than why we sometimes want it. About 15 years ago, residents of a New Jersey neighborhood started complaining about hearing a local AM station (really local: 10KW in the middle of the development) on their answering machines and telephones.The odd thing was that this apparently coincided with its switch from an "Easy Listening" music format to Korean language evangelism (I suspect a power increase as well). In any case, when the customer ordered equipment for that neighborhood he could (and IMO should) have considered proximity of pole-mounted power and other wiring to a high power RF source not anticipated by standards-writers. Cortland Richmond - - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
