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| BPL interference had been ironed out already !!! re: »news.com.com/Broadbands+power-li···g=cd.top
But policy disputes and expensive failures largely have been the hallmark of BPL. In 1999, for example, Nortel Networks, a telecommunications equipment maker, and the British energy company United Utilities abandoned a two-year BPL project.
Because BPL uses the radio frequency signals sent over medium- and low-voltage AC power lines to connect customers to the Internet, it can cause interference with HAM radios and emergency radios. Power lines, it seems, are great and often overpowering antennas because of their length and height off the ground.
In 2004, the FCC released a set of rules governing the use of BPL to prevent interference. Most BPL equipment deployed today keeps to these limits.
"I think the issue of interference has been a little overblown," said Bob Gerardi, manager of power line communications for Duke Power, based in Charlotte, N.C. "Some of the first-generation equipment had some problems, but the latest technology adjusts the power levels to avoid any interference."
With many of the technical issues ironed out, BPL is slowly getting deployed. More than 50 utilities across the country are looking into it. Duke Power, along with Progress Energy in Raleigh, N.C, and Consolidated Edison in New York, is one of three power companies currently in trials with EarthLink.
Duke began its trial with 500 homes and plans to launch a commercial service to 10,000 to 15,000 homes by the end of this year, said Gerardi. The company, which will rent access to its network to ISPs such as EarthLink, said it will be able to handle high-speed data services at 512kbps to 5mbps, along with voice over IP services. The cost of the service will likely be about $30 a month. | |
KB2PSM
join:2002-08-06
Long Beach, NY | "Some of the first-generation equipment had some problems, but the latest technology adjusts the power levels to avoid any interference."
That may be technically correct and may work in a lab. If/when a BPL signal is interfering with a 50 MHz radio communication between a police car or ambulance and the dispatcher, how will the BPL system know at that relevant time to lower the power level? | |
 imho
@isp.comcastbusiness. | Current Communications 3/2/2004
Current Communications and Cinergy Launch Broadband Access over Powerlines
Tuesday, March 2, 12:00 pm Eastern Time
re: »www.current.net/OurCompany/PressReleases/
=====================
It`s more than a year now... no airplanes collided or crashed flying above or emegency calls being blocked by BPL in Current`s BPL service areas !!! | |
KB2PSM
join:2002-08-06
Long Beach, NY
1 edit | It's late, so I will be brief. Given the propagation of HF radio waves, interference can occur outside of the service area.
Since 9/11, we haven't had another terrorist attack here in the NYC area. Although that is comforting, I don't think that the threat is less real. (Of course I am not equating BPL and the horrific events of 9/11, but you get my point.)
I would also not assume that because the BPL provider denies any instances of interference, that this means that there wasn't. I don't mean to paint them all with the same wide brush, but several BPL providers clearly played with the facts and figures in their favor.
Furthermore, I don't hope for a plane to crash before folks will agree to look at the concerns related to the propagation of RF across unshielded power lines.
Be well, Rob | |
| reply to imho
Re: BPL interference had been ironed out already ! Current Communications and Cinergy Launch Broadband Access over Powerlines
Tuesday, March 2, 12:00 pm Eastern Time
re: »www.current.net/OurCompany/PressReleas..
=====================
It`s more than a year now... no airplanes collided or crashed flying above or emegency calls being blocked by BPL in Current`s BPL service areas !!!
Current Technologies version of BPL does not use HF frequencies!
It uses carrier frequencies in the 30-50 mHz range which
still may cause interference to lo-VHF *licensed* services
such as the State Governments including State Police agencies.
Additionally, your logic is faulty. Just because something
hasn't happened so far doen't mean the potential of it
occurring somtime in the future are nil.
After reading the number of un-informed and ill-informed
posts in this thread, I am both amazed and appalled at the
ridiculous arguments some of these so-called BPL proponents
are asserting. (Oops, sorry, that word is probably not in
many of your vocabularies). Opinions are cheap and everyone
has one. Try basing arguments on fact and using logical
deductions to make your points instead of spouting an
ill-conceived "opinion" as fact. | |
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