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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Meu caro Carlos Mourato , sem dúvida que
aprecio a discussão que estão a ter . Só não concordo que a média de 2 sinais ,
um de S9 e outro de S9 + 40 dB seja S9 + 20 dB , mas sim um sinal que há-de
estar mais perto dos S9 + 40 do que do S9 . Seria preciso converter em relação
de potências, passar a potências , achar a média e aplicar logaritmos á
potência média achada , isto eliminando as unidades S e trabalhando só entre
0 dB e 40 dB .<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Se calhar estou a divagar , e se assim for
desculpem lá …<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Um abraço <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>CT1RH <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>De:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> <st1:PersonName
w:st="on">cluster-bounces@radio-amador.net</st1:PersonName> [mailto:<st1:PersonName
w:st="on">cluster-bounces@radio-amador.net</st1:PersonName>] <b><span
style='font-weight:bold'>Em nome de </span></b>Carlos Mourato<br>
<b><span style='font-weight:bold'>Enviada:</span></b> quarta-feira, 6 de Abril
de 2011 16:34<br>
<b><span style='font-weight:bold'>Para:</span></b> <st1:PersonName w:st="on">Resumo
Noticioso Electrónico ARLA</st1:PersonName><br>
<b><span style='font-weight:bold'>Assunto:</span></b> Re: ARLA/CLUSTER: RE: Death
of short wave imminent</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Exactamente<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Se o ruido fosse entre S9 e S9+40, então o limite seria a média ods
dois ou sejam, S9+20!...Só mesmo de uma besta com a concordância de outra besta
como o Bush, que alem de besta seria tambem um ignorante na matéria.<o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Imaginem isso aplicado às regras da estrada...Se apanhassem um carro a
300km/h e outro a 200, então o limite de velocidade seria de <st1:metricconverter
ProductID="250 Km/h" w:st="on">250 Km/h</st1:metricconverter>...Estes
legisladores, deviam ficar em casa a maioria do tempo!!!...Não faziam nada, mas
tambem não estragavam nada!!<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>73 de CT4RK<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>2011/4/5 João Gonçalves Costa <<a href="mailto:joao.a.costa@ctt.pt">joao.a.costa@ctt.pt</a>><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Pois efectivamente é uma
mentira do dia 1 de Abril, mas o mais interessante é que já vi
argumentação muito próxima, o fim da protecção contra interferências em
HF, defendida pela FCC e empresas eléctricas que querem incentivar o negocio
dos PLT/PLC tendo por base "short wave broadcasting is in rapid decline,
with most broadcasters moving to the internet" .<br>
<br>
Alias, a melhor que conheço foi uma proposta da FCC no tempo da administração
Bush que defendia que o valor de referencia do ruído zero deveria ser a media
dos valores relativos encontrados, nos locais. Assim, alterava-se o nível do
padrão de ruído para poder acomodar o PLC. Imagina-se isto, no seu equipamento
de HF tinha ruído de S9+20dB, no entanto, isto seria o nível zero do padrão
para a sua área, ou seja, o problema não estava em quem interferia mas sim no
"excesso" de sensibilidade do seu equipamento. Por causa desta
"brincadeira" vários inspectores da FCC que nunca poderiam concordar
com isto, foram demitidos dos cargos, ou obrigados a pedir a reforma
antecipada.<br>
<br>
Alias, o relatório do Congresso do E.U.A.: "Decepção e desconfiança: A
Comissão Federal das Comunicações sob o mandato do presidente Kevin J.
Martin" é uma investigação clarificadora que alertou de que maneira o Sr.
Kevin abusou de procedimentos dentro da FCC; manipulando ou suprimindo
relatórios, dados e informações, em especial as apresentadas pela ARRL, sobre
os efeitos nefastos da tecnologia BPL/PCL no espectro radioeléctrico, entre
outras múltiplas acusações.<br>
<br>
O relatório pode ser lido aqui: <a href="http://tinyurl.com/3lmmo24"
target="_blank">http://tinyurl.com/3lmmo24</a><br>
<br>
João Costa, CT1FBF<br>
<br>
________________________________<br>
<br>
De: <a href="mailto:cluster-bounces@radio-amador.net">cluster-bounces@radio-amador.net</a>
[mailto:<a href="mailto:cluster-bounces@radio-amador.net">cluster-bounces@radio-amador.net</a>]
Em nome de <a href="mailto:matos.jcf@mail.exercito.pt">matos.jcf@mail.exercito.pt</a><br>
Enviada: terça-feira, 5 de Abril de 2011 16:14<br>
Para: <a href="mailto:cluster@radio-amador.net">cluster@radio-amador.net</a><br>
Assunto: ARLA/CLUSTER: Death of short wave imminent<br>
<br>
<br>
<br>
From: <a href="http://blog.g4ilo.com/" target="_blank">http://blog.g4ilo.com/</a><br>
<br>
<br>
<br>
Atenção que foi publicada no dia 01Abril mas, nunca
fiando……………………………<br>
<br>
<br>
<br>
<br>
Death of short wave imminent <<a
href="http://blog.g4ilo.com/2011/04/death-of-short-wave-imminent.html"
target="_blank">http://blog.g4ilo.com/2011/04/death-of-short-wave-imminent.html</a>><br>
<br>
<br>
Amateur radio as we know it could be extinct by the year 2020. That is the only
possible conclusion to draw from an unpublished EU policy document that has
been leaked to several ham radio bloggers including myself. The document
proposes that existing RFI standards protecting the short wave frequencies be
torn up as "preventing the use or increasing the cost of essential
technology in order to protect the activities of a small number of hobbyists
makes no political sense." This policy has already been unofficially in
place at the UK's Ofcom <<a href="http://www.ban-plt.co.uk/truth-lies.php"
target="_blank">http://www.ban-plt.co.uk/truth-lies.php</a>> , which was one
of the major contributors to the report.<br>
<br>
The report suggests that withdrawing the standards relating to short wave RFI
would save significant costs by removing the need to deal with complaints about
interference. It also suggests that the UK Telecommunications Act (and similar
laws in other EU countries) be amended to remove any right to protection from
interference of the broadcast, amateur or CB services.<br>
<br>
To support its recommendations the report claims that "short wave
broadcasting is in rapid decline, with most broadcasters moving to the
internet" and that "the intended use of Citizens Band as a personal
communications service has largely been replaced by cellphone usage."
Amateur radio, it says, carries "little communication of any importance
that could not be made using the telephone, cellular network or the
internet." The main use of ham radio, it suggests, is "largely
recreational" and could be replaced by "online simulations and VOIP
chat services." Hams could also make more use of the largely
interference-free bands above 400MHz which otherwise could be sold to
commercial users. Radio amateurs "could still experiment with radio in the
time-honoured manner, they just should not expect to be able to enjoy
interference-free reception on the short waves."<br>
<br>
The reason for the desire to remove the protection of our frequencies becomes
clear when you read the part of the report that describes forthcoming
technologies that are expected to cause problems with RFI compliance. In order
to meet carbon emissions targets and deal with expected power shortages caused
by the early closure of nuclear power plants in countries such as Germany, the
EU plans to introduce smart grids <<a
href="http://en.wikipedia.org/wiki/Smart_grid" target="_blank">http://en.wikipedia.org/wiki/Smart_grid</a>>
in all European nations by 2020. These smart grids use BPL technology to
communicate with smart meters <<a
href="http://en.wikipedia.org/wiki/Smart_meter" target="_blank">http://en.wikipedia.org/wiki/Smart_meter</a>>
in each individual home. The smart meters, in turn, use PLT technology to
communicate with smart devices in order to regulate their use. When demand for
electricity is high, power cuts or the switching on of expensive standby power
stations can be avoided by shutting off inessential devices instead. Examples
of inessential devices given in the report include amateur radio linear
amplifiers - assuming it's still possible to hear anything on short wave over
the BPL and PLT QRM in the first place.<br>
<br>
The EU is also proposing that 80% of properties in member states should be
equipped with solar panels by 2020. To achieve this target, installation costs
will be heavily subsidized by governments, which clearly want to cut costs as
far as possible. Estimates produced by a Chinese manufacturer of solar power
systems suggest the cost saving that would result from eliminating the need for
RFI suppression circuits in the power converters would amount to 4 billion Euro
for the whole of Europe.<br>
<br>
The report concludes that "the cost of protecting the short wave spectrum
from interference from technologies that are essential to be installed
throughout Europe in the next decade to meet emissions targets and maintain the
well-being of all European citizens is quite simply prohibitive" and urges
that EU Commissioners pass the necessary laws by<br>
<br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
CLUSTER mailing list<br>
<a href="mailto:CLUSTER@radio-amador.net">CLUSTER@radio-amador.net</a><br>
<a href="http://radio-amador.net/cgi-bin/mailman/listinfo/cluster"
target="_blank">http://radio-amador.net/cgi-bin/mailman/listinfo/cluster</a><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br clear=all>
<br>
-- <br>
<b><span style='font-weight:bold'>Best 73 from: regards from: CT4RK Carlos
Mourato - Sines - Portugal</span></b><br>
<br>
<b><font color=red><span style='color:red;font-weight:bold'>Warning</span></font></b><o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><b><font size=3 color=red face="Times New Roman"><span
style='font-size:12.0pt;color:red;font-weight:bold'>Save the Radio Spectrum!
Eliminate Broadband over Power Line. </span></font></b><o:p></o:p></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=3 color=red
face="Times New Roman"><span style='font-size:12.0pt;color:red;font-weight:
bold'>Salve o espectro electromagnético!. Não use a rede electrica para
transmitir dados. Os "homeplugs power line" e a tecnologia
"power line" causa fortes interferencias noutro serviços sem voce se
aperceber. Diga não à tecnologia power line. Proteja o ambiente
electromagnético. Utilize tecnologia de redes sem fio, denominadas wireless.</span></font></b><br>
----------------------------------------------------------- <o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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