Agree about start frequency. The AM BCB in Europe includes frequencies from 150 kHz to just shy of 300 kHz, as well as the 530 1710 kHz range available in North America.
I know why 150 kHz to 30 MHz was used for military and aerospace CE, and I think the commercial world just sort of copied the stop point, but in the CBEMA report on the basis of FCC EMI limits of digital equipment published around 1978, they said that 30 MHz was the lowest they could go with good measurement practice for RE, and that CE control would cover them up to 30 MHz. As Henry Ott says, ³A CE limit is an RE limit in disguise.² Ken Javor Phone: (256) 650-5261 From: John Allen <[email protected]> Reply-To: John Allen <[email protected]> Date: Mon, 12 Aug 2019 22:09:55 +0100 To: <[email protected]> Subject: Re: [PSES] Frequency range for conducted emissions An ³easy one² for us ³oldies² but I¹m sure that John Woodgate will quickly reply ³in detail² the frequency limit relates directly to the ³old² Long Wave² frequency band, which starts at 150kHz! J John E Allen W. London, UK From: [email protected] [mailto:[email protected]] Sent: 12 August 2019 21:37 To: [email protected] Subject: [PSES] Frequency range for conducted emissions Hello group, Does anyone know why the conducted emissions for ITE products starts at 150KHz and end at 30MHz? Why not start at 120KHz or 190KHz. Why finish at 30 and not 40MHz? Thank you Peter - ---------------------------------------------------------------- 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 <[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) <http://www.ieee-pses.org/list.html> 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]> - ---------------------------------------------------------------- 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 <[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) <http://www.ieee-pses.org/list.html> 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]> - ---------------------------------------------------------------- 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 <[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]>
