LOL Ken, maybe if you want to listen to AM Radio you probably shouldn’t be driving a Tesla. ;-)
I have to say, personally, I’m on Teslas side here. They realize that other means exist to get radio stations anywhere, if you really want that. As long as my car gets internet, I’m happy. Have a very happy Holiday everyone. Cheers, Derek. > On Dec 20, 2021, at 9:48 AM, Ken Javor <[email protected]> wrote: > > It is worth noting that about one hundred years ago, in the complete absence > of EMC departments or even acknowledgement of such a discipline, electrical > engineers worked out what was necessary to adequately suppress ignition noise > to allow for AM BCB reception in automobiles. Whereas today, Tesla for > instance, with a full-up EMC department, punted on AM BCB reception in their > electric vehicles. > > Ken Javor > Phone: (256) 650-5261 > > > From: Bill Owsley <[email protected] > <x-msg://2/[email protected]>> > Reply-To: Bill Owsley <[email protected] <x-msg://2/[email protected]>> > Date: Mon, 20 Dec 2021 03:25:20 +0000 > To: <[email protected] <x-msg://2/[email protected]>> > Subject: Re: [PSES] US vehicle EMC regulations > > > Long ago, when US auto manufacturers were the main stream norm, and they > worked out a deal with the FCC to regulate themselves and not be subject to > the FCC. > The FCC agreed since any interference would be obvious and the FCC has the > primary interference clause, thou shall not interfere, or they would impose > Federal regs on the auto industry. > If has worked well, but has not in the US, come up with a common set of auto > EMC standards. > So for Auto EMC, map out the "big three" requirements and stay under the > composite levels. > > Aside: anyone remember non=resistive plugs and copper spark plug wires and > radios with tubes that used a vibrator (old style) to generate AC to then > generate the correct DC needed to run the radio ? > And listening to AM with cars around you ? Buzzzing noise ! > > ps. The EU is quite different. > > - Bill Owsley > EMC First LLC (Jan 2022) > > > > > > On Friday, December 17, 2021, 10:52:58 AM EST, Ken Javor > <[email protected] <x-msg://2/[email protected]>> wrote: > > > > > > CISPR 25 is used for equipment-level emissions (CE & RE). This is for the > purpose of protecting on-board radio reception and has nothing to do with the > FCC. ISO 11452-X provide a variety of immunity requirements. And, as noted > previously, various OEMS have their own internal requirements. The only FCC > overview of any of this concerns SAE J551, where they measure vehicle-level > emissions at ten meters separation from the vehicle, for the protection of > roadside licensed broadcast receivers. > > Ken Javor > Phone: (256) 650-5261 > > > From: "James Pawson (U3C)" <[email protected] > <x-msg://2/[email protected]>> > Reply-To: "James Pawson (U3C)" <[email protected] > <x-msg://2/[email protected]>> > Date: Fri, 17 Dec 2021 12:05:33 -0000 > To: <[email protected] <x-msg://2/[email protected]>> > Subject: [PSES] US vehicle EMC regulations > > Hi all, > > I’m familiar with UNECE Regulation 10 that covers EMC for vehicles and > Electronic Sub Assemblies in Europe. > > Is there an equivalent set of vehicle EMC standards for the US? > > Presumably CFR47 Part 15 applies to unintentional and intentional radiators > as well? > > Thanks and all the best > James > > > > James Pawson > The EMC Problem Solver > > Unit 3 Compliance Ltd > EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy > > www.unit3compliance.co.uk <http://www.unit3compliance.co.uk/ > <http://www.unit3compliance.co.uk/>> | [email protected] > <x-msg://2/[email protected]> <mailto:[email protected] > <mailto:[email protected]>> > +44(0)1274 911747 | +44(0)7811 139957 > 2 Wellington Business Park, New Lane, Bradford, BD4 8AL > Registered in England and Wales # 10574298 > > > > > <https://www.avg.com/internet-security > <https://www.avg.com/internet-security>> This email has been checked for > viruses by AVG antivirus software. > www.avg.com <https://www.avg.com/internet-security > <https://www.avg.com/internet-security>> > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > - > ---------------------------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. 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To post a message to the list, send your e-mail to <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
