It's not obvious to me why the US approach wouldn't work elsewhere. There doesn't seem much potential for harm in such a device, and it is really handy.
> From: "Lothar Schmidt" <[email protected]> > Date: Tue, 12 Jul 2005 11:41:57 -0700 > To: "Ken Javor" <[email protected]>, <[email protected]> > Subject: RE: Radiated emission measurement below 30MHz > > Ken, > > This is a good example. IN Europe this is not allowed by the rules. Any > intentional radiator need to have license. Some can be general some are > individual and it is not a matter of power. It is only the intentional > part which is important. > > Lothar Schmidt > > Technical Manager EMC, SAR, Antenna testing and BQB > > CETECOM Inc. > 411 Dixon Landing Road > Milpitas, CA 95035 > > Phone +1 408 586 6214 > Fax +1 408 586 6299 > > This e-mail may contain proprietary, privileged and confidential > information for the sole use of the named intended recipient. Any review > or distribution of this e-mail by any party other than the intended > recipient or that person's agent is strictly prohibited. If you are not > the intended recipient, please delete all copies and immediately Contact > the sender. You must not, directly or indirectly, use, disclose, > distribute, print, or copy any part of this message if you are not the > intended recipient. > Thank you. > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf > Of Ken Javor > Sent: Tuesday, July 12, 2005 10:59 AM > To: [email protected] > Subject: Re: Radiated emission measurement below 30MHz > > You are vastly OVERESTIMATING the load at 10 pF. A 41" rod over a > ground > plane is a 10 pF load. > > I find this thread interesting. I can buy an audio input device > transmitting in the FM band for the purpose of playing an audio device > through my automobile stereo system. Clearly this device was designed > to > intentionally transmit in the FM band, and further it must transmit with > the > same modulation and at the same center frequencies as stipulated by law > for > the FM band. > > So it is not as simple as saying you can't transmit in a broadcast band. > There is the issue of control. If I am using the above described > device, I > will choose an FM channel not currently being broadcast on, and the > power > level is low enough it only reaches a few feet. > >> From: "Robert A. Macy" <[email protected]> >> Date: Tue, 12 Jul 2005 08:52:23 -0700 >> To: John Woodgate <[email protected]> >> Cc: [email protected] >> Subject: Re: Radiated emission measurement below 30MHz >> >> It radiated an ELECTROSTATIC field. We're talking voltage >> field of 100V at 150KHz. A little 1 inch wire poked out >> with 100 V on it. Current was the load of the parasitic >> capacitance around 10pF. You can't even see that 10 m away >> >> Yet, not allowed, go figure. >> >> - Robert - >> >> On Tue, 12 Jul 2005 05:33:29 +0100 >> John Woodgate <[email protected]> wrote: >>> Robert A. Macy <[email protected]> wrote (in >>> <[email protected]>) about 'Radiated emission >>> measurement below 30MHz', on Mon, 11 Jul 2005: >>>> Is this allowed? >>>> >>>> It was my understanding that one of my clients tried to >>> get a *very* low power intentianal "radiator" [at these >>> frequencies, radiator is a euphemism] through Europe and >>> due to some application there, couldn't even start >>> although the power could not even be measured within 10 >>> meters. >>>> Seriously, there was NOTHING at 10 m. They saw >>> "intentional radiator" >>>> 150KHz, and said NO. >>>> >>>> Did we use the wrong people? >>> >>> It's difficult to tell. Was 150 kHz the actual operating >>> frequency or did it just emit (marginally) at that >>> frequency? 150 kHz is just above the lower end of the LF >>> broadcast band (lower end 148.5 kHz) and it could be >>> argued that no intentional radiator can be accepted whose >>> operating frequency is in a broadcast band. >>> -- >>> Regards, John Woodgate, OOO - Own Opinions Only. >>> Deadlines are 90% of deadliness. >>> http://www.jmwa.demon.co.uk Also see >>> http://www.isce.org.uk >>> >>> >> ---------------------------------------------------------------- >>> This message is from the IEEE Product Safety Engineering >>> Society >>> emc-pstc discussion list. Website: >>> http://www.ieee-pses.org/ >>> >>> To post a message to the list, send your e-mail to >>> [email protected] >>> >>> Instructions: >>> >> http://listserv.ieee.org/listserv/request/user-guide.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: >>> >>> Richard Nute: [email protected] >>> Jim Bacher: [email protected] >>> >>> All emc-pstc postings are archived and searchable on the >>> web at: >>> >>> http://www.ieeecommunities.org/emc-pstc >> >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society >> emc-pstc discussion list. Website: http://www.ieee-pses.org/ >> >> To post a message to the list, send your e-mail to [email protected] >> >> Instructions: > http://listserv.ieee.org/listserv/request/user-guide.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: >> >> Richard Nute: [email protected] >> Jim Bacher: [email protected] >> >> All emc-pstc postings are archived and searchable on the web at: >> >> http://www.ieeecommunities.org/emc-pstc >> > > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > Instructions: http://listserv.ieee.org/listserv/request/user-guide.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: > > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/request/user-guide.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: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
