About 2 years ago, a comparative testing of this technology (different technical approaches) was conducted in N.Carolina with participating companies >from the US, UK, and Israel. I have no knowledge of any subsequent developments. Regards
"Nagel, Michael" <[email protected]> wrote: Dave, here in Germany they worked on a similar technology 2-3 years ago, there were first tests with a limited number of users but most of the projects were cancelled. The main reason was, besides the lack of interest from potential customers, EMC! The conducted emission was not so much of a problem but as the mains are routed in any way you can imagine, the conductors are quite good antennas. Within the range of 2MHz-40MHz you find a lot of frequencies ranges belonging to radio communications which are likely to be disturbed. This was the case here. There was a quite harsh discussion during the EMV 2003 (EMC trade fair and conference) about this topic. The limits are quite low here already but the people speaking in favor of the radio services (some of the governmental frequencies are in that range) were in favor of lim! its close to the noise floor. The real challenge in this case is the sheer size of a network of unterminated lines. Some companies are trying to revive the BPL project in Germany but as nearly everybody has access to DSL I do not think they will have success. This would be good news for the radio communication services! If you are interested in some documents I will try to find some URLs on that topic. I did not follow the discussion recently so there might be some things I am not aware of. Regards, Michael Michael Nagel - Senior EMC Engineer FORCE COMPUTERS GmbH Lilienthalstrasse 15 A Solectron Company D-85579 Neubiberg/Muenchen - Germany Tel: +49-89-60814-0 Fax: +49-89-60814-376 e-mail: [email protected] WWW: http://www.forcecomputers.com > -----Original Message----- > From: Garnier, David S (MED) [mailto:[email protected]] > Sent: Freitag, 18. Juli 2003 01:3! 8 > To: [email protected] > Subject: FCC's inquiry for broadband over the powerlines (BPL) > > > > Hello, > > I don't remember seeing any discussion on the listserve concerning > this... > As I understand this, this is a carrier current system, digital > modulation > format, frquencies ranging from 2 to 40 Mhz, amplitude limits > of ~40 dB > to 60 dB above Class A conducted emission limits. > > Anybody have any experiance or comments about this? > > For further explanation see: > http://hraunfoss.fcc.gov/edocs_public/SilverStream/Pages/edocs.html > Use the search term: "broadband over power line" > > thanks, > > dave garnier > > > David Garnier > e GE Medical Systems > ___________________________________________ > David S. Garnier > Senior Technician > PET Engineering ! > 3000 N. Grandview Ave - M/S W-1250 > Waukesha, Wi. 53188 > Tel: 262.312.7246 > > > > > > ------------------------------------------- > 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] > > Archive is being moved, we will announce when it is back on-line. > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > 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] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc _____ Do you Yahoo!? SBC Yahoo! DSL <http://pa.yahoo.com/*ht p://rd.yahoo.com/evt=1207/*http://promo.yahoo.com/sbc/> - Now only $29.95 per month!
