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BPL and Smart Grid Archives

By year:

  • 2004 / earlier-

    Broadband over PowerLine World interviews Earthlink about BPL
    December 29, 2004, Broadband over PowerLine World -- Broadband over PowerLine World interviewed Dave Baker is V.P. for Law and Public Policy. He explained that the comments Earthlink made to the FCC were intended to be taken only in that context, and that Earthlink was "bullish" on BPL. "Asked further about allegations from amateur radio operators that the FCC was not following up on their complaints about RF interference from BPL, Mr. Baker said 'BPL is a broadband technology that can potentially serve millions of customers and that ought not be held hostage by···amateur radio operators or any other special interest.' " This may become the definitive example of the BPL industry's strategy and attitude toward interference, and its apparent inability to effectively address it. In one statement, Baker noted that the new FCC rules addressed the interference, and in the next, he accused those who are seeking redress for interference of being a "special interest" that is "holding hostage" the BPL industry's desire to serve millions.

     

    Who's minding the broadband over power line (BPL) store in Cottonwood, Arizona?
    December 24, 2004, Broadband over Power Line World --"Getting comments from those institutions responsible, according to the Arizona Republic article, for running the BPL trial, however, has not been as easy as it was to get the views of those worried about RF interference from that trial. . . On the next day, Tuesday, December 21, 2004, a spokesperson for APS, External Communications Manager Alan Bunnell, left a voice mail for Broadband over Power Line World in which he said that APS was "not invested" in BPL technology, that APS is merely "watching the industry," that APS is "not into the business" of supplying BPL, but that it is willing to let others "use the lines" to offer that service. . . However, on Wednesday, December 22, 2004, Lance Rosen, president of Plexeon Logistics, Inc., one of the principals in Electric Broadband, LLC, told Broadband over Power Line World that while Electric Broadband, LLC, was involved in setting up the Cottonwood BPL deployment, it is no longer part of the operation there. Broadband Electric, LLC, he said, was "a joint venture" that is now "not involved" in the Cottonwood broadband BPL trial."

     

    BPL a Danger to Amateur Radio?
    12/23/04, TMCNet -- This is a response by ARRL's Media Public Relations Manager, Allen Pitts mailto:w1agp@arrl.org, to an press release published on the TMCNet site about BPL in Texas. Pitts notes that the original article did not address the interference issues associated with BPL, then went on to explain those issues with respect to interference to and from BPL.

     

    PLT and broadcasting -- can they co-exist?
    12/22/2004, EMC Compliance Journal -- This article, written by an engineer who works for the British Broadcasting Corporation, shows conclusively that BPL in its present form will cause serious harmful interference to international shortwave-broadcast signals. Although it outlines solutions that could help reduce the severity of the interference, it realistically notes that these solutions are nowhere near implementation.

     

    Interview with representative from the Verde Valley Amateur Radio Association
    December 21, 2004, BPL World -- BPLW spoke with Robert Shipton, K8EQC, VP, Verde Valley Amateur Radio Association. Mr. Shipton lives in Cottonwood, Arizona, and was able to speak in detail about the situation regarding BPL RF interference there, as well as about the wider implications of this problem.

     

    Con Ed-Ambient's Briarcliff BPL trial runs into interference from amateur radio operators, whose association, the ARRL, asks the FCC (again) to shut it down
    December 18, 2004 - Broadband over Powerline World -- This article discusses the background and present status of the ongoing and unresolved complaint of harmful interference to amateur radio and international shortwave-broadcast spectrum from the small BPL trial operated by ConEd in Briarcliff Manor, NY.

     

    Ambient Responds on Behalf of Industry to Recent ARRL Statement
    12/16/2004, CBS Market Watch -- Ambient Corporation responded to an article written by ARRL about an FCC filing made by Earthlink . In its article, ARRL reported on the statements made by Earthlink about Earthlink's conclusions about BPL vis a vis other technologies.Ambient responded by stating that ARRL had presented Earthlink statements "out of context."Its response also inaccurately attributed to ARRL many of the points originally said by Earthlink. The Ambient rebuttal did not provide the URL to the Earthlink filing, however, but it was included in the original ARRL article.

     

    Con Ed sells broadband operations; Earthlink discusses BPL
    December 16, 2004 -- Etopia Media - "Con Edison, lead test site for Ambient BPL equipment, sells its broadband operations to FiberNet, while EarthLink attorney tells the FCC that 'wireless and BPL technologies are not likely to be competitive in cost and performance with cable and DSL over the last mile to the home."

     

    David Sumner, CEO of ARRL talks about BPL
    December 14, 2004 -- ARRL CEO David Sumner, K1ZZ, is interviewed by reporter Marc Strassman of Broadband over Power Line World. The long (almost an hour) audio interview thoroughly covers the issue of BPL interference to radio services, especially amateur radio and explains the shortcomings in the FCC's October 2004 BPL Report and Order.

     

    ConEd Pulls The Plug On Broadband
    12/13/2004 Telecom Web - "New York's giant Consolidated Edison power company is exiting the broadband industry, selling off its Con Edison Communications (CEC) subsidiary to FiberNet for $37 million in cash. ConEd is one of the last major, and believed to be the biggest, power utility still left in the telecom game selling managed services to large corporate users. The theory behind the sale is that a network services specialist such as FiberNet will be a more nimble and competitive player in the market."

     

    Marvin Bloomquist, speaking for ham radio operators in Burnet, Texas, finds some fault with the deployment and the deployers of broadband over power line in his community. December 10, 2004 -- Etopia Media
    "Mr. Bloomquist appeared as a guest on Broadband over Power Line World to discuss concerns raised by the amateur radio community in Burnet about the BPL installation in their town. During that conversation, Mr. Bloomquist reported on an informal test conducted in a Burnet parking lot near the power lines carrying the BPL signal which found that the BPL transmission "pretty much completely covers up the 2 megahertz to 22 megahertz" part of the radio spectrum, the part reserved for ham radio operators. Mr. Bloomquist said that cooperation between the ham radio operator community and Broadband Horizons was not as close as Mr. Bates had indicated it was in his interview. He also said that contrary to the impression that Mr. Bates encouraged in his interview, Broadband Horizons was not going to be providing a lot of BPL access to farmers and ranchers, due to the expense of delivering this service to widely-dispersed users."

     

    Broadband over Power Lines in the Real World: Early Commercialization in Manassas, Virginia
    12/1/2004, Research and Markets -- "BPL received a green light in an October 2004 technical ruling from the Federal Communications Commission. Nevertheless, substantial challenges may impede BPL from achieving its full potential. Amateur radio operators are fighting BPL deployments over the issue of interference. System economics are still uncertain, especially in rural areas..."

     

    BPL: The New Kid on the Block
    12/1/2004, Communications Technology -- This column appeared in the December 2004 issue of Communications Technology, the Journal for the Society of Cable Telecommunications Engineers. It discusses the interference potential of BPL to the cable-television industry.

     

    Dayton, Ohio goes Wi-Fi
    November 26, 2004, Muniwireless.com -- This article describes the WiFi wireless network being planned for Dayton, OH. Even more eye-opening, though, is the list of 60 articles about cities worldwide that are taking this approach to bringing broadband to their areas. With careful selection of 802.11 channels locally, harmful interference to licensed spectrum can be avoided altogether with this approach to broadband.

     

    Easy Broadband -- And Smarter Power
    NOVEMBER 22, 2004 -- "That, however, will require significant upgrades of utility substations and power lines. And nobody knows exactly how big an investment will be necessary. First, power companies have to mount boxes on certain utility poles to deliver data signals. Early estimates of installation costs range from $50 to $150 per home passed, plus $30 to $200 more for modems in each home, according to a study by EPRI and its consulting arm, Primen. Internet service provider EarthLink Inc. (ELNK), which is testing BPL schemes with Con Edison, says that to make money from selling broadband access at $20 to $30 a month, a utility may have to get installation costs down to $20 per home passed and less than $100 per modem."

     

    SBC Picks Microsoft for IP-based TV
    November 17, 2004 -- Although this article is about SBC's plant for fiber-to-the-home, it discusses the BPL rulemaking as one of the driving factors behind SBC's interest in building out fiber.

     

    Be Quiet. We're Listening
    November 15, 2004 Wall Street Journal -- This subscriber-only Wall Street Journal article describes the concerns of the radio astronomy observers in Green Bank, WV. "In a setback for the scientists, the FCC last month endorsed the use of broadband through power lines, or BPL, technology. Radio astronomers and others oppose the technology ... because it generates electromagnetic interference. In essence,it turns power lines into radio antennas. The FCC decided the interference concerns could be addressed by BPL providers, and set some technical requirements for BPL gear."

     

    Radio Days
    November 10, 2004 -- By Jack Ganssle, Embedded.com -- This article takes an engineering outlook on the poor design choices that put high-speed digital signals on overhead power lines. "It seems to me that BPL violates the basic tenet of good RF engineering: constrain unwanted radiation using twisted pair or coax. . . We all want the benefits of wireless electronics. Carelessly designed spectrum-polluting embedded systems will make that dream much harder to achieve."

     

    Broadband Over Power Lines: Plugging in the Third Wire to the Home
    November 8, 2004, Wilmer, Cutler, Pickering, Hale and Dorr -- This article offers a brief overview of the recent FCC rules changes and some predictions about additional regulations that may be to come.

     

    Broadband over power lines gets poor reception
    November 04, 2004 -- by Graeme Wearden, ZDNet UK
    Research published this week has shown that broadband over power line services may not be attractive to many potential customers. Energy information firm Platts suggests that commercial take-up could be limited. One issue holding people back is a lack of trust in their electricity providers. Platts found that many customers had mixed feelings about the kind of reliability, customer service and technical support they could expect from a utility selling a BPL service.

     

    Cisco CTO Whips WiMax
    November 3, 2004 -- This article focuses on wireless, but the CTO of CISCO had some observations about BPL: "Later in his remarks, Giancarlo gave broadband-over-power-lines (BPL) a whack as well (see Powerline Ethernet Gets the Nod). 'As far as these HomePlug and PowerLine products, Cisco has had them available for two years. And we've still got plenty of inventory.' He says power companies have a great deal of work to do before the power grid could be a viable means of residential broadband deployment. 'We have to find a way to deal with getting it through the transformers and other power conditioning equipment... This has been a non-market. Consumers are not responding to it.'"

     

    Amateur Radio Operators Weigh Legal Challenge to FCC's BPL Order
    November 3, 2004 -- This interview of ARRL's CEO, Dave Sumner, K1ZZ, appeared in the Communications Daily, a publication of Warren Communications News. It is posted with permission. Sumner outlines ARRL's reaction to the BPL Report and Order and describes the next steps ARRL expects to take. Warren Communications News can be contacted via the information on their web page.

     

    Country Energy -- Aurura Queanbeyan BPL Trial, by Phil Wait VK2DKN
    Observations of the Queanbeyan BPL Trial, Wireless Institute of Australia
    November 1, 2004 -- Two representatives of the Wireless Institute of Australia were invited to a demonstration of BPL at Queanbeyan New South Wales by Country Energy. An overview of the current regulatory environment was discussed before attendees were taken by bus to the demonstration area. The level of interference on amateur bands was very considerable and in the neighborhood of the system would make amateur radio unusable.

     

    Uncertainty of technology makes decision tougher
    Written By Garrett Ordower and reprinted on the ARRL Web page with the permission of the Daily Herald 10/30/2004 - This article discusses the risks of BPL compared to other technologies. "While technology can be hard to pin down, given the flexibility and availability of fiber, and the confidence even the Baby Bells have in it long-term, Collins doesn't see it going the way of the PS/2 anytime soon. 'The fiber-to-the-home builds are where the industry is headed, even for the Bells,' Collins said."

     

    Sachs: BPL Not a Proven Competitor
    October 26, 2004 -- At a recent meeting of utility regulators, president Robert Sachs, the National Cable Telecommunications Association President noted, "High-speed Internet access offered by electric utilities has yet to demonstrate that it can attract consumers and represent robust competition to cable and phone companies."

     

    Sandersville, Georgia, Launches the Largest Fixed Wireless WiMAX System in State; Tri-State Broadband Installs New Wireless Internet Service
    October 25, 2004 -- A WiMax system in Sandersville, GA is serving 300 square miles. Wireless broadband does not pose the same high risk for interference seen from BPL.

     

    FCC's broadband blessing not sparking utilities to act -- yet
    October 24, 2004 -- By Rick Stouffer TRIBUNE-REVIEW -- "There almost is a disincentive for utilities to get involved in broadband," said Davis, director of Broadband Access Technologies at the Boston-based consulting firm. "The investment community is scrutinizing closely anything the utility industry is doing, and any large telecom project would be frowned upon. Plus, from a pure market entry perspective, you have very strong incumbent broadband providers in place that also offer bundled services."

     

    Utilities take pass on offering broadband
    Boston Globe, October 24, 2004 -- This article explains why most electric utilities are not flocking to BPL in droves. The author writes: "Of the nearly 160 investor-owned utilities in the United States, dozens have tried out ''broadband over power line" systems. Only one -- Cinergy Corp. in Cincinnati -- has moved ahead with a significant commercial rollout, so far attracting barely 1,500 subscribers. Dozens of utilities that ran trials of the service in the last three years took a pass on making a business venture of it." From the utility side, "New York's Consolidated Edison Corp. has been testing Ambient powerline broadband systems for years. But asked whether it plans to go to a commercial rollout, ConEd spokesman Chris Olert said: ''No way. We're not in the broadband business. Our primary interest is in utility applications" such as using communications channels over electric lines to read meters and monitor blackouts."

     

    Hams display interference from BPL
    October 22, 2004 -- The BPL system in the City of Manassas, VA has often been cited as being interference free. To the contrary, amateurs there have filed interference reports with the City and the FCC from the very beginning of the trial. This article in the Potomac News documents interference to and from the BPL system in Manassas.

     

    217 Fiber Communities
    89 started since May of '04
    October 21, 2004 -- According to the fiber to the home forum, there are now 217 communities in 37 different states with fiber to the home projects underway. "Not content to wait for upgrades from the local telephone or cable companies, they are laying their own fiber and building their own communications infrastructure. These 'smart' communities enable their residents and businesses to become much more productive and innovative, thereby improving the quality of their citizens' lives," says Mike DiMauro, council president.

     

    Broadband over Power Lines might not be such a problem after all
    October 21, 2004 -- An article on the Radio Netherlands web page outlines that the interference threat from BPL may not be as bad as it looks. It outlines the reasons that BPL may not become widely deployed.

     

    FCC rule gives Web new outlet
    October 19, 2004 -- After announcing the new rules changes, this article discusses that the technology is economically feasible only in areas with high population density. Alan Shark, identified as the President of the Power Line Communications Association, a major BPL industry group, summed it up: "' The cost is 'very reasonable' when the power line is no longer than a mile," Shark said.' A spokesman for the Boone Electric Corporation summarized his opinion of the use of BPL: "'"It looks" like it could work "very well in areas with very dense population, but once you start going out any distance, especially in the country, you have to have boosters and electrical hardware every quarter-mile,' Rohlfing said. 'It's just not cost-effective yet.'" AmerenUE, a major midwestern electric utility, discusses why it is not going to proceed with deployment of BPL at this time: "'It works very well,' said Erica Abbett, a company spokeswoman. But because the technology is expensive, AmerenUE has no intention to roll it out commercially at this time."

     

    FCC Tries To Jolt Life into Power Line Broadband
    October 15, 2004 -- Meta Group senior analyst David Willis said although the FCC initiative to breed more competition into the U.S. broadband market may have its merits, the power line broadband effort is unlikely to do so. "It's hard to make a business case," Willis told TechNewsWorld. Another analyst noted: "Wireless Internet service providers (WISPs) -- which are successfully serving smaller, rural markets around the country -- are using a variety of technologies to serve the pockets without high-speed Internet."

     

    Power Line Broadband: FCC prepares to move technology forward
    October 13, 2004 -- This Broadband Reports article discusses interference and other drawbacks to BPL. "Not only are there interference concerns, but some have found geographical limitations make BPL more of a niche technology than the sweeping cure-all envisioned by the FCC. Alliant Energy's BPL Project Leader Dan Hinz - someone who should know - says he considers BPL to be a 'strategic deployment technology,' not one that could successfully be deployed anywhere in America with the hopes of competing against DSL or Cable."

     

    Broadband Over Powerline: Status and Prospects 2004
    October, 2004 -- The Electric Power Research Institute (EPRI) and its subsidiary Primen released Broadband Over Powerline: Status and Prospects 2004, a white paper summarizing the state of emerging technology that allows for high-speed data communications over existing electric power lines. Broadband over powerline (BPL) has been heralded as a potential "third wire," competing with DSL and cable as a means of providing Internet access to U.S. homes and businesses. "This white paper is a guide to where BPL stands right now, including information on vendors, projects, and commercial deployments," says Karen George, a principal at Primen, a Boulder, Colorado, U.S.-based energy market intelligence company affiliated with EPRI. George co-wrote the study with EPRI's Clark Gellings, vice president for Innovation.

     

    IN MY VIEW: BPL's Pandora's Box
    September/October, 2004 -- IEEE Power Engineering Society
    This editorial published in the IEEE Power Equipment Society (PES) looks to be very useful information for your local electric utility company. Electric utility companies generally have confidence in anything published by the PES. The article discusses the mechanisms by which BPL systems radiate; the applicable FCC rules and a clear and honest description of the impact of BPL on shortwave and low VHF spectrum.

     

    Proposed rules pit 'hams' vs. broadband Net users
    9/28/2004 --- USA Today -- "The "hams" say widespread rollout of power-line broadband could be a virtual death knell for their beloved hobby because the service often emits radio waves on the same channels they use. The problem is that electric wires are not shielded and data, which travel in energy waves, can easily disrupt other services. . . Hams have flooded the FCC with complaints about some of the trials."

     

    Ham radio users make case against broadband system
    September 28, 2004 -- By CATHY MENTZER, Staff writer, Public Opinion, Chambersburg, PA -- "If the borough were to use its electric power lines to provide high-speed Internet service, it could render the high-frequency radio signals used by amateur radio enthusiasts and emergency services providers virtually useless, a group of local ham radio operators said Monday. David Yoder, president of the Cumberland Valley Amateur Radio Club, urged Borough Council to postpone any consideration of deploying a broadband-over-powerline system, known as BPL. He said BPL is a largely untested technology and advised council to wait for advances before plunging into a BPL system, which would allow high-speed Internet service to be distributed over power lines and permit subscribers to access the Internet from any electrical outlet with the use of a modem."

     

    IEEE Spectrum Amped Up and Ready to Go
    September 22, 2004 -- "Regulatory issues are far from fully resolved, even now. The main issue keeping officials up at night is signal interference. U.S. ham radio operators have complained about the effect of power line transmissions on their communications signals, while some regulators have voiced concerns over privacy following reported cases of eavesdropping. . . In Germany, "we have had acute cases of radio interference being reported--in the range of 30 to 40 decibels," said Thilo Kootz, an engineer with the German ham radio club DARC e.V. in Baunatal. "And consider this: the European Commission, which has helped fund the development of the shortwave Digital Radio Mondiale [DRM] technology, now seems willing to destroy this new FM-quality system with its support of power line communications."

     

    Fears for new digital radio system
    13 September, 2004 -- Plans to offer the internet using mains electricity cables could cause so much interference that new digital radio stations could be obliterated, a broadcasting conference has been told.

     

    Ham radio users oppose broadband lines
    August 24, 2004 -- Public Opinion, Chambersburg, PA -- About 20 members of the Cumberland Valley Amateur Radio Club told council they are concerned about the potential for a broadband-over-powerline system to block important emergency communications.

     

    A man, a LAN, a plan
    August 19, 2004, Electronic Design News -- This article discusses home networking in general, but outlines difficulties encountered with several in-home BPL modems. "Before diving into specifics, I'll share a general observation: Power-line networking is frighteningly finicky. I've pulled my hair out (figuratively) when an Ethernet-to-power-line adapter that worked fine one day failed to work the next morning. I've struggled with adapters that work in only one plug of a two-plug outlet. I've seen adapters that don't work with the power plug oriented in one direction but behave nicely with the plug polarity flipped 180°. I've had adapters refuse to work when plugged directly into an outlet but function happily when connected to the same outlet through a several-foot extension cord and vice versa. (Explain that one!)"

     

    Danger: Power Lines Overhead?
    August 12, 2004 -- By Ben McClure -- "The utility companies are latecomers to the broadband arena, where they face a tough battle against DSL and cable providers that offer cheaper, bundled services to customers. Traditionally, new technologies need to enter the marketplace with a price advantage or superior service, or both. Right now, BPL doesn't appear to have either. Besides, after getting hammered by Wall Street for disastrous investments in unregulated businesses, utilities are adopting a back-to-basics strategy that, for most, probably doesn't include full-scale ventures into the broadband service arena."

     

    Beware the BPL Buzz
    August 2, 2004 -- eweek.com
    Official pronouncements of BPL benenefits either minimize, or completely ignore, the realities of physics and hardware that make resulting radio-frequency interference a high probability -- and an unreasonable risk, not just to hams, but to many other users of an irreplaceable spectrum resource.

     

    PY moves toward high-speed Web
    July 28, 2004, Finger Lakes Times -- This article outlines how the village of Penn Yan, NY abandoned its BPL trial and quickly and easily switched over to a wireless mesh network. Data Ventures, the involved ISP, felt that BPL was not "commercially deployable" in Penn Yan.

     

    'Broadband over power line' trial yanked in C.R.
    July 02, 2004, By Dave DeWitte The Gazette
    "CEDAR RAPIDS -- A word to the techno-wise: If you plan to test a technology causing a stir nationwide because of HAM radio interference, don't expect to go unnoticed in a city teeming with radio engineers. Alliant Energy began a pilot project on March 30 to test technology that can provide broadband Internet access over power lines. It shut down the project June 25 in Cedar Rapids, months earlier than planned. The decision came after repeated complaints of radio interference from HAM radio operators."

     

    Interference Characteristics of Broadband Power Line Communication Systems Using Aerial Medium Voltage Wires
    April 1, 2004, IEEE Communications magazine (IEEE Communications Society members only) -- The promise of broadband power line (BPL) communications - broadband access to virtually every home in the United States - will remain unfulfilled if the radio emissions from these systems cause significant harmful interference to other users of the wireless spectrum. This article presents an elementary analysis of the physical mechanisms underlying these emissions, from which the interference characteristics of BPL systems can be derived. Numerical models are evaluated for idealized systems using overhead medium-voltage wires, a configuration that is of particular interest for U.S. deployments. The central conclusions of the analysis are: BPL interference is governed primarily by two parameters: signal power and electrical balance of system excitation. Interfering emissions are typically confined to the immediate vicinity of the BPL wire, but long-range effects cannot be neglected. Measurements on an installed BPL system suggest that it is operating within, but very close to, the limits set by rules recently adopted by the Federal Communications Commission.

     

    SARL RESPONDS TO TSHWANE PLC TRIAL
    3.28/2004 - SARL News Bulletin Archive -- This week the SARL has voiced its concern about the introduction of Power Line Communications in the programme Technologic which aired on the DSTV Business Channel 55, Summit TV. The programme was broadcast on Monday and repeated on Wednesday and Friday evening. SARL President, Graham Harlett was interviewed at the National Amateur Radio Centre and said that the SARL is opposed to Power Line Communication because of its inherent interference to High Frequency Radio communication. The interference is not limited only to frequencies used by Radio Amateurs but also the military, Civil Emergency Agencies and broadcasting stations.

     

    FCC Set to End Our Right to Listen to Foreign Broadcasts . . . and More
    May 26, 2004 -- Even if BPL "notches" the Amateur bands, the reception of international shortwave broadcast in residential neighborhoods will be seriously impaired.

     

    Power line telecoms: Data over the mains
    March 18, 2004 -- Although written from a British perspective, the article asks the most important question related to BPL interference issues: "These recordings should be required listening for the accountants in any power company that is planning to launch a commercial PLT service. They can then ask two simple questions. Does our system cause similar levels of interference? And, if it does, are we willing to gamble shareholders' money on building a telecoms system which the government may shut down because it interferes with radio reception and emergency service communication?"

     

    Power Line Networking Technologies broadband potential
    March 16, 2004 --  Power line communications (PLC) or Broadband over Power Lines (BPL) allows transmission of data over power lines. Power line communications uses the RF signal sent over medium and low voltage AC power lines to allow end users to connect to the Internet. The RF signal is modulated with digital information that is converted by an interface in the home or small business into Ethernet compatible data.



    Broadband over power lines could cause static
    March 9, 2004 Cincinatti Post By Peter Nord -- This article explains in simple terms what will happen for interference both to and from license hf users when these systems get going. "Radio interference works both ways. A radio transmitter can cause the little wall plug to stop working. There is, by definition, no interference protection available for unlicensed devices. The wall plugs are unlicensed devices which must be removed from service if they cause interference."

     

    Why broadband over power lines is a bad idea
    Friday, Feb. 27, 2004 -- "HERE'S THE DEAL: BPL is a technology that uses radio waves, transmitted over power lines, to provide broadband Internet or other data connectivity. The problem with BPL is simple physics: Radio waves like to fly off into space. When they do, interference results. In order to get broadband speeds, BPL uses a large number of frequencies, some of which are capable of traveling literally around the world even on the small transmitter power that BPL systems use."

     

    Government Entry Into the Telecommunications Business: Are the Benefits Commensurate With the Costs?
    February 3, 2004, The Progress Freedom Foundation, by Thomas M Lenard -- This paper outlines the pitfalls of government entities such as municipal-owned electric utilities entering the telecommunications market. It focuses more on fiber than BPL.

     

    Interferences instead of shortwave broadcast
    February 1, 2004, DARC web site -- Listening to shortwave broadcast in parts of the city of Mannheim, Germany is almost impossible. This article documents that interference and the actions of German shortwave listeners and amateur operators to get this interference corrected.

     

    Interference questions dog broadband over power lines: Groups claim emerging technology disrupts radio signals
    January 07, 2004, IDG News Service -- The BPL industry started the year of 2004 by denying that there were any interference problems with BPL. The FCC BPL rulemaking focused on interference, with a long list of frequencies and areas that BPL is simply not permitted to use. To this day, the industry has not resolved the interference problem, and as more BPL systems deploy, the electric utilities that invest in them must also invest in dealing with the interference complaints. "Ham radio operators and at least one U.S. federal agency contend that broadband over power lines interferes with their radio signals, and if the radio operators have their way, the emerging technology that could offer Internet users another broadband service choice might not get off the ground in the U.S. . . 'Our experience in the field contradicts what (the ARRL is) alleging,' Kilbourne said. "We're entirely satisfied that there won't be any interference.'"

     

    FEMA says power line broadband threatens its radio system
    12/17/03 -- Government Computer News. In a letter to the FCC, the Federal Emergency Management Agency expressed "grave concerns" that BPL interference would impair its mission-essential HF radio operation. Although they later clarified that FEMA has not determined with certainty that interference would occur, the FCC's final rules made much of the spectrum that FEMA might use off limits to BPL.

     

    Broadband Over Power Lines? PLC -- "There's trouble a comin' down the lines..."
    August, 2003 -- Hams and other users of the HF bands in the USA have reason for worry. The Federal Communications Commission (FCC), the agency that regulates the civilian use of the RF spectrum in the US, is all aglow about allowing the power companies to connect customers to the Internet over their power lines.

     

    Promises and False Promises of PowerLine Carrier (PLC) Broadband Communications
    August 31, 2003 -- A Techno-Economic Analysis by Rahul Tongia, Ph.D., Asst. Research Professor, School of Computer Science (ISRI)/Dept. of Engineering & Public Policy, Carnegie Mellon University. The paper examines some of the pros and cons of this technology, as well as nontechnical issues relating to its deployment including regulation, competition, and the business case. PLC has very high potential in terms of its market reach, given the ubiquity of electricity service in the US. However, the nature of the technology and the US power grid design make its economics less compelling than recent public statements by its proponents. The paper also presents some comparisons to DSL and cable technologies, in terms of differentiating factors, evolution, and economics. In the current environment, cable appears to have an advantage in terms of capabilities, given its higher total bandwidth (albeit shared), which allows it to offer the "triple play" of services: voice, video, and broadband internet. Ultimately, whether PLC becomes a niche or mainstream technology for broadband Internet access will depend on successful execution of the business plans envisaged by PLC-based companies.

     

    Power Line Networking Technologies broadband potential
    August, 2003, Shane Kirwan and Greg South -- This term paper in computer networking presents an overview of early BPL technologies and offers some predictions for their future prospects.

     

    Interview with municipal broadband expert
    June 18, 2003, Muniwireless.com -- "There is an excellent interview conducted by Broadband Reports with Jim Baller, one of the US leading experts on municipal broadband projects. Mr. Baller is the founder of Baller Herbst Law Group based in Washington D.C. and Minneapolis MN and as been involved in municipal projects for many years. Mr. Baller draws similarities between the electric power industry and communications, and discusses fiber to the home (FTTH), municipal projects to deliver cheaper broadband and voice over IP." There is also a long list of links to other wireless sites and pages.

     

    Powerline Networking Test Drive
    April 1, 2002 -- Various HomePlug networking systems were tested. The results showed that factors like heavy electrical loads, old wiring, multiple circuits, distance from the power mains and other factors can degrade performance.

     

    Megabits per Second on 50 Hz Power Lines? 
    The reason for the removal of the RegTP field trial license, based on numerous protests, is that Digital Power Line Communications (PLC) is trying to increase the speed of data rates into the Megabits per seconds range. Therefore the short wave band of up to 30 MHz will be transmitted over the low voltage distribution network. The recent history of PLC in Germany together with the standardization and measurement procedures used are given. Public opinion in Germany and technological alternatives to PLC like ADSL and wireless communications with low power are discussed and explained. The present approach of the remaining PLC consortia and their attempt to introduce the PLC technology nation wide is questionable. Author: Diethard Hansen, EURO EMC SERVICE (EES)

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