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Utility Cuts Short BPL Trial that was Target of Amateur Complaint
(Jun 28, 2004)
White House Relying on NTIA to Make BPL Interference Issue Go Away
(Jun 25, 2004)
FCC Turning Blind Eye in BPL Proceeding, ARRL Charges
(Jun 24, 2004)
ARRL in Substantial Agreement with FCC on Wide-Ranging Proposals
(Jun 16, 2004)
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UTILITY CUTS SHORT BPL TRIAL THAT WAS TARGET OF AMATEUR COMPLAINTS
Alliant Energy has called an early end to its broadband over power line (BPL)
pilot project in Cedar Rapids, Iowa. The "evaluation system" went live March 30,
and plans called for keeping it active until August or September. Alliant shut
it down June 25. Ongoing, unresolved HF interference from the system to retired
engineer Jim Spencer, W0SR, and other amateurs prompted the ARRL to file a
complaint to the FCC on Spencer's behalf demanding it be shut down and the
utility fined.
Alliant Energy's BPL Project Leader Dan Hinz says the ARRL complaint "certainly
was a factor" in the utility's decision to pull the plug prematurely but "not
the overriding factor." The main reason, he said, was that Alliant accomplished
most of its objectives ahead of schedule. The primary purpose of the Cedar
Rapids evaluation was to gain an understanding of BPL technology and what issues
might be involved in a real-world deployment, Hinz explained. But, he added,
regulatory uncertainty and other unspecified technical issues also factored into
the choice to end the pilot early.
Hinz said Alliant is "moshing the data" to compile a written evaluation of the
Cedar Rapids pilot, but the company has no plans at this point to move forward
with BPL. Alliant did not partner with a broadband services provider, and it has
no other BPL test systems in operation. The system used Amperion BPL equipment.
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FCC Turning Blind Eye in BPL Proceeding, ARRL Charges¡¨
http://www.arrl.org/news/stories/2004/06/24/1/?nc=1
White House Relying on NTIA to Make BPL Interference Issue Go Away¡¨
http://www.arrl.org/news/stories/2004/06/25/5/?nc=1
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The ARRL has weighed in on behalf of Iowa amateur and ARRL member
Jim Spencer, W0SR, of Cedar Rapids, who has suffered severe
broadband over power line (BPL) interference for more than two
months. A formal complaint to FCC Enforcement Bureau Chief
David H. Solomon calls on the Commission not only to order
Alliant Energy's BPL field trial system to shut down but to
fine the utility $10,000 for violating the Communications
Act of 1934 and FCC Part 15 rules. Alleging "ongoing harmful
and willful interference to one or more licensed radio stations,"
the ARRL asked Solomon to intervene "on an emergency basis."
ARRL CEO David Sumner, K1ZZ, who signed the letter of complaint,
said Alliant Energy has been aware since March 30--the date it
installed Amperion BPL equipment in Spencer's neighborhood--that
the BPL system was causing harmful interference.
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PLD, state that so far the commercial trials have not been economically
viable; equipment costs are higher than expected and problems of RF
leakage. This is indeed good news for Amateur Radio and other users of
the Radio Spectrum. We must not become complacent, the FCC in the USA
have agreed unanimously to go forward with a "Notice of Rule Making" on
the subject of BPL. Council is fully aware of the potential problems
this form of data transmission may cause, and our Officers are ever
watchful whenever this subject is being trialled here in New Zealand.
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ARRL URGES "THOUGHTFUL, CONSIDERED COMMENTS" ON PROPOSED BPL RULES
Comments on the FCC Broadband over Power Line (BPL) Notice of Proposed
Rule Making (NPRM) in ET Dockets 03-104 and 04-37 are due by Monday, May
3. The deadline for reply comments--comments on comments filed by
others--is Tuesday, June 1. The ARRL will comment by the deadline on the
FCC's proposals to amend its Part 15 rules to adopt new requirements and
measurement guidelines for so-called "Access BPL" systems that provide
broadband access via electric utility power lines. ARRL CEO David Sumner,
K1ZZ, says the League recommends that members read the NPRM and develop
their own thoughtful, considered comments that specifically address the
FCC's BPL proposals, reflect positively on the amateur community and, if
possible, offer alternative recommendations. He asked amateurs to keep
four things in mind, however.
"First, this is not a proceeding to 'permit' or 'authorize' BPL," he said.
"BPL is already permitted under the existing Part 15 rules."
Second, Sumner pointed out, the NPRM reaffirms that licensed services must
be protected from harmful interference and are not required to protect BPL
systems. "This is good, but we can't take it for granted that the
principle will be honored in practice," he said.
"Third," Sumner went on, "the NPRM proposes additional, new constraints on
BPL to protect licensed services. The FCC did not go far enough, but at
least the proposals aim in the right direction."
Finally, while the League continues to believe firmly that BPL is "a very
bad idea," arguing that the FCC should ban BPL "will not get us anywhere,"
he concluded. Instead, Sumner says, amateurs must document beyond any
doubt the levels of protection that must be given to over-the-air
services, then leave it for others to decide whether BPL is feasible
within those limits. "We need to prove that the risk of interference is
significantly greater than the BPL proponents say it is," Sumner said.
He also asserted that the FCC's proposed "interference mitigation"
requirements fall far short of providing real protection from harmful
interference, and that the Commission is ignoring the practical problems
that will arise when Amateur Radio transmissions disrupt BPL systems.
Carrier current systems like BPL are subject to the FCC's Part 15 rules
governing unlicensed devices, and the FCC has acknowledged that "amateur
operations are likely to present a difficult challenge" to BPL deployment,
especially in the case of hams--an estimated 150,000 of them--who use
high-gain antennas sited near power lines. The proposed rules remain
silent on the issue of mitigating BPL interference to the estimated 70,000
Amateur Radio HF mobile stations.
Interference mitigation for mobile stations "is clearly impractical,"
Sumner asserted. "Since BPL systems operating at the present Part 15 limit
cause harmful interference to mobiles, the only solution is an absolute
limit on radiated emissions that is lower than the present limit." He said
the ARRL was in the process of determining scientifically what the limit
must be.
Sumner further noted that the NPRM does not mandate a publicly accessible
BPL database to facilitate interference mitigation for fixed stations. In
addition, the League wants the FCC to establish performance standards for
BPL interference mitigation. "There must be severe enforcement penalties
for failure to resolve a complaint in real time and for failure to
maintain the database," he said.
The League encourages anyone, particularly radio amateurs, who has
actually experienced BPL interference to file detailed comments
documenting the interference. "BPL proponents claim they are not getting
interference complaints," Sumner noted. "If we let them claim their
systems are 'clean' when we know they aren't, shame on us."
Interested individuals and organizations may file comments via the
Internet, using the FCC's Electronic Comment Filing System (ECFS)
<http://www.fcc.gov/cgb/ecfs/>. In an unusual move, the FCC has added
another docket number to the BPL proceeding. That could complicate filing
comments and may lead to some confusion. Although the original FCC BPL
Notice of Inquiry last April bore ET Docket 03-104, the recent BPL NPRM
carries an additional docket number--ET Docket 04-37. The ARRL advises
those posting comments to use the main ECFS page and file their comments
on both proceedings--ET Docket 03-104 and ET Docket 04-37.
When submitting a comment or viewing filed comments, ECFS users should
type "03-104" or "04-37" (without quotation marks but including the
hyphen) in the "Proceeding" field of the ECFS on-line form. Do not use the
NPRM's FCC document number when filing or searching for comments. The ECFS
permits attaching a file containing detailed comments prepared off-line.
ARRL President Jim Haynie, W5JBP, will discuss the various implications of
BPL with overnight radio talk show host Art Bell, W6OBB, on the Saturday,
March 20, edition of the syndicated interview and call-in program Coast to
Coast AM <http://www.coasttocoastam.com/>. Their interview is scheduled to
air during the show's first hour (Sunday, March 21, 0600 UTC). The
toll-free call-in number for Western US listeners is 800-618-8255. For
Eastern US listeners it's 800-825-5033. First-time callers may use
775-727-1222. The "Wild Card Line"--for any caller--is 775-727-1295. The
popular program, distributed by Premiere Radio Networks, airs live nightly
from 10 PM until 2 AM Pacific Time on 430 stations and is available in
every state. It's also available via the Web
<http://www.coasttocoastam.com/streamlink/about.html>.
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FINAL CALL FOR PARTICIPATION
The objective of the symposium is to stimulate research and
contribute to the formation and solution of new problems encountered by
scientists and engineers working in this field. The symposium covers a
range of communication topics from a practical as well as theoretical
point of view. Furthermore interesting exhibitions are organized in
parallel with the technical sessions.
Today, there is no doubt that the residential power line is one of
the most attractive media to realize the wired ubiquitous networks.
Ingenious digital communication technologies developed in recent years
have made it possible to carry more than several Mbps and some of them
have been put into commercial use. Those high-speed PLCs that can
perform ``plug-and-play'' with integrated power and information
delivery arouse consumers' interests.
The organizing committee has received a large number of interesting
and high quality papers. Fruitful discussions, contacts, and new ideas
are strongly expected throughout the symposium. It is an excellent
opportunity for you to present your exceptional work in power-line
communication techniques, absorb the latest advancements, and see the
latest products. It is a chance to associate with the best and
brightest -- quality people like you!
On-site Registration is possible
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