I believe that the lower bound of 450 kHz was chosen to also include 455 kHz, which is the common IF frequency of consumer AM radios.
>-----Original Message----- >From: Ken Javor [mailto:[email protected]] >Sent: Wednesday, July 24, 2002 3:45 PM >To: Jim Eichner; 'EMC-PSTC - forum' >Subject: Re: Changes to FCC Conducted Limits for Part 15 & 18 > > > >The original 450 kHz lower limit bracketed the low end of >commercial AM >broadcast transmissions in the USA (530 kHz). In Europe, there is AM >broadcasting between 150 kHz and about 300 kHz. I believe this is >designated LW (long wave) as opposed to the usual American AM >band which is >MW (medium wave) and the HF bands which are called short wave. > >---------- >>From: Jim Eichner <[email protected]> >>To: "'EMC-PSTC - forum'" <[email protected]> >>Subject: RE: Changes to FCC Conducted Limits for Part 15 & 18 >>Date: Wed, Jul 24, 2002, 4:12 PM >> > >> >> A philosophical .vs practical question: Why is the FCC >doing this? Is it >> harmonization for the sake of harmonization, or are there >real-life issues >> driving it? If it's the latter, what sorts of products have >susceptibility >> issues between 150kHz and 450kHz? >> >> Thanks, >> >> Jim Eichner, P.Eng. >> Manager, Engineering Services >> Xantrex Technology Inc. >> Mobile Power >> web: www.xantrex.com <http://www.xantrex.com> Ed Price [email protected] Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
