<div dir="ltr">Boas a todos.Eu tentei assinar a petição mas deu erro porque parece ser só para residentes na Inglaterra.No entanto como sou membro no UKQRM já coloquei a questão ao Mike que me apareceu no registo da petição e estou a espera da resposta.No entanto podendo estar a fazer um erro na inserção dos dados se alguem conseguir assinar a petição e que não dê erro que diga algo.Todos contra o PLC enquanto não haver compatibilidade electromagnetica com a onda curta.Obrigado.<br>
<br>73 de Hugo Barata CT2HMX<br><br><div class="gmail_quote">On Mon, Aug 25, 2008 at 1:17 AM, João Costa > CT1FBF <span dir="ltr"><<a href="mailto:ct1fbf@gmail.com">ct1fbf@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Radio interference from Internet over mains units<br>
<br>
The horrendous radio interference problems caused by devices providing<br>
an Internet connection over the household electrical mains has become<br>
a 'hot topic' recently with a petition being started on the Government<br>
website to get the devices banned.<br>
<br>
A number of companies are selling products that enable people to link<br>
their computers or TV set-top boxes to the Internet via the household<br>
mains. Such devices are even being supplied to consumers by British<br>
Telecom (BT) as part of their BT Vision product.<br>
<br>
In a recent posting on the DRM-L Yahoo group Mike Barraclough provided<br>
some links demonstrating the interference these devices cause across<br>
the radio bands. Mike wrote:<br>
<br>
BT are supplying two Comtrend DH10-PF adaptors, they are being used to<br>
communicate from the BT Home Hub by the computer to the BT Vision<br>
V-Box by the television.<br>
<br>
The interference affects all bands, there is limited, but not<br>
particularly effective, notching in the amateur bands.<br>
<br>
Here are some WAV files recorded two weeks ago by Alan Roe in<br>
Teddington whose neighbours have these devices, Alan is a long time<br>
shortwave broadcast band listener and editor for the World DX Club.<br>
<br>
For each file, you'll hear Alan stepping through the range in 5 kHz steps:<br>
<br>
4700-4800khz 13500-13600kHz<br>
5900-6000kHz 15000-15100kHz<br>
9400-9500kHz 17450-17550kHz<br>
11500-11600kHz 25600-25700kHz<br>
<br>
BT Vision is installed in 282,000 UK homes, the adaptors are supplied<br>
as standard and the install guide says customers should use them.<br>
<br>
There are alternatives to this technology, wired or wireless<br>
solutions. Ofcom are logging complaints as spectrum abuse and it's<br>
known that in three cases the adaptors have been removed by BT<br>
following complaints to Ofcom.<br>
<br>
However a complaints based system does not solve the problem, BT<br>
Vision has been targeted so far at current BT Broadband users, they<br>
are shortly to be advertising the system nationally.<br>
<br>
For much more information - please go to the UKQRM website at:<br>
<a href="http://www.mikeandsniffy.co.uk/UKQRM/" target="_blank">http://www.mikeandsniffy.co.uk/UKQRM/</a><br>
<br>
and join the Yahoo Group at:<br>
<a href="http://tech.groups.yahoo.com/group/UKQRM/" target="_blank">http://tech.groups.yahoo.com/group/UKQRM/</a><br>
<br>
and if you are a British citizen (including ex-pats) or resident sign<br>
the petition at:<br>
<a href="http://petitions.number10.gov.uk/SaveShortwave/" target="_blank">http://petitions.number10.gov.uk/SaveShortwave/</a><br>
<br>
<br>
<br>
Mike<br>
<br>
DRM-L Yahoo Group<br>
<a href="http://www.groups.yahoo.com/group/DRM-L" target="_blank">http://www.groups.yahoo.com/group/DRM-L</a><br>
<br>
<br>
-- Fonte: The Southgate News website<br>
_\\|//_<br>
( o o )<br>
------------------ooO-(_)-Ooo------------<br>
73 de:<br>
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* CT1FBF / João Alberto Costa<br>
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* In get Callsign " CT1FBF "<br>
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</blockquote></div><br><br clear="all"><br>-- <br>73 de Hugo Barata CT2HMX<br><br>»»»»»»»»»»Diga não ao PLC,PLT,BPL....não use a rede electrica para afiar serrotes ,queria interferências noutros serviços sem que se aperceba!!!«««««««««<br>
<br>
</div>