(Araucaria) PLC radio interference

[PY2ZX]

Olá amigos,

Finalmente os problemas das interferências PLC chegaram na cúpula da ITU.

Vide notícia abaixo, com a declaração do secretário-geral, que por sinal
também é radioamador.

Acompanhem também o mais recente estudo da BBC sobre PLC indoor
detonando a recepção DAB em freq. da ordem de 200 MHz:

http://archangelo.net/temp/plc/new/PLC-BBC-March2011.pdf

Flávio PY2ZX
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Forum highlights radio interference fears
Non-ITU compliant home network equipment may cause problems

Geneva, 02 June, 2011 – Concerns that home networking products using
power line transmission (PLT) technology may cause interference with
radio services led to a Forum last week in Geneva to address the issue.
ITU’s own home networking standard ITU-T G.hn was considered to have
electromagnetic compatibility (EMC) and mitigation techniques that go
well beyond those considered essential for protecting radio services.

Given the variety of electronic devices in our homes, *strict EMC
requirements are imperative*. *Over-the-air broadcast services in
particular could be subject to interference from PLT systems*.

The event took place in parallel with an interoperability event giving
ITU-T G.hn chipset vendors the opportunity to test their products, which
will be on the market later this year. It brought together radio
spectrum experts from national regulators, service providers, and
product manufacturers, as well as standards development organizations
(SDOs) and industry alliances including ETSI, IEC, IEEE, HomeGrid Forum,
IARU, NAJO/IAU and HomePlug.

The Forum successfully achieved its goal of agreeing on commitments and
future actions by all stakeholders to resolve interference issues in the
interest of consumers. A key conclusion is that ITU will act as the
focal point for coordinating other SDOs and industry alliances in order
to agree further developments.

“There are PLT products on the market that do not conform to the
necessary EMC standards, and this is very much a concern,” says Dr
Hamadoun Touré, Secretary-General, ITU. “We are fortunate in ITU to have
telecom and radio experts from both the private sector, government and
regulators. Together they have agreed the necessary requirements to
ensure that products conforming to *ITU standards do not cause
interference, which may have potentially serious consequences. We would
caution service providers and others against rolling out technologies
conforming to specifications that do not meet ITU requirements*.”

John Shaw, representing BBC World Service, said at the meeting: "*For
broadcasters, it is extremely important that products sold do not
interfere with the reception of programmes or reduce coverage. We
applaud the efforts of ITU to ensure international acceptance of the
organization's stringent guidelines on compatibility between electronic
communication systems and the use of the radio frequency spectrum."
Similar views were also expressed by representatives of the aeronautical
and radio astronomy communities*.

ITU Telecommunication Standardization Bureau