Kitz Forum
Broadband Related => Broadband Technology => Topic started by: kitz on November 15, 2014, 06:16:45 PM
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Stumbled across this document which may make interesting reading for someone.
Its a government report of PowerLine Telecommunication Technologies, that specifically mentions the use of PLT for delivery of broadband and also the use of PowerLine [Adapters] in the home causing EMI and interference with xDSL technology.
- technologies, that use the electric power lines (the "mains") to, and within, homes to carry the high speed data signals used by broadband Internet.
- mains wiring is unsuitable for carrying such signals, and so PLT results in excessive electromagnetic interference (EMI).
http://www.publications.parliament.uk/pa/cm200910/cmselect/cmbis/72/72we21.htm
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PS If anyone has these
TP LINK AV500 Gigabit Powerline Adapter Kit (http://www.shop.bt.com/products/tp-link-av500-gigabit-powerline-adapter-kit-7V4C.html?utm_source=google&utm_medium=ppc%20product%20search&utm_campaign=PLA%20|%20Category%20|%20HomePlug)
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fwww.shop.bt.com%2Fimages%2Fproduct%2Funi2%2FDigitalContent%2F7v%2F7V4C_C837A825-F90B-440D-BBD5-E7BBF23A6B65_large.jpg&hash=be83942121baafa27a3cb224267ea0bf39b0e304)
The equipment does not meet the requirements of CISPR 22 chapters in "Limits of mains terminal disturbance voltage" and "Limits for radiated disturbance."
They have been withdrawn & Banned in Norway - link (http://translate.google.com/translate?sl=auto&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&u=http://www.npt.no/teknisk/ekomutstyr/markedskontroll/resultat-av-markedskontroller/tp-link-tl-pa511-av500-gigabit-powerline-adapter-for-kommunikasjon-over-kraftnett&act=url)
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Ironically these are sold by BT :-X
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As have these
Netgear XAVB5004 Powerline 4-Port AV 500 Kit (http://www.amazon.co.uk/Netgear-XAVB5004-Powerline-4-Port-Theater/dp/B004I9IANS)
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fecx.images-amazon.com%2Fimages%2FI%2F31Lsr7zE6oL._SX425_.jpg&hash=f0046c29ae9695a7608b8342241c2e2c62faeabc)
The equipment does not meet the requirements of CISPR 22 chapters "Limits of mains terminal disturbance voltage" and "Limits for radiated disturbance."
They have been withdrawn and banned in Norway - link (http://translate.google.com/translate?sl=auto&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&u=http://www.npt.no/teknisk/ekomutstyr/markedskontroll/resultat-av-markedskontroller/netgear-internet-adapter-for-home-theatre-xavb5004-for-kommunikasjon-over-kraftnett&act=url)
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The idea was OK for a central printer in an office, but IMHO has been pushed far beyond a sensible data rate.
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I think someone on our street has the tp link ones, I installed them. Can't remember the exact model though
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I've recently being trying to ascertain whether the smart meters being rolled out in UK use any form of power line comms.
I know(/think) they use low power radio within the home, as well as mobile phone technology for contacting HQ, but not sure whether they may also use plc for any reasons?
Haven't yet found any definitive answers.
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This part really hits home -> It can also interfere with the delivery of broadband Internet by xDSL technologies using telephone cables, slowing their data rate.
I was using the TP-Link AV200 model no: TP-PA211
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This part really hits home -> It can also interfere with the delivery of broadband Internet by xDSL technologies using telephone cables, slowing their data rate.
I was using the TP-Link AV200 model no: TP-PA211
PA211 rings a bell, guess that's what my neighbour has.
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As have these
Netgear XAVB5004 Powerline 4-Port AV 500 Kit (http://www.amazon.co.uk/Netgear-XAVB5004-Powerline-4-Port-Theater/dp/B004I9IANS)
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fecx.images-amazon.com%2Fimages%2FI%2F31Lsr7zE6oL._SX425_.jpg&hash=f0046c29ae9695a7608b8342241c2e2c62faeabc)
The equipment does not meet the requirements of CISPR 22 chapters "Limits of mains terminal disturbance voltage" and "Limits for radiated disturbance."
They have been withdrawn and banned in Norway - link (http://translate.google.com/translate?sl=auto&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&u=http://www.npt.no/teknisk/ekomutstyr/markedskontroll/resultat-av-markedskontroller/netgear-internet-adapter-for-home-theatre-xavb5004-for-kommunikasjon-over-kraftnett&act=url)
They also banned the movie, 'The Life of Brian' in Norway. Just about sums them up. ;) ;D ;D
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I've recently being trying to ascertain whether the smart meters being rolled out in UK use any form of power line comms.
I don't think so either, which is surprising as they have used the grid for slow data for years. However, something with the data rate appropriate to a meter ( or a printer ) isn't going to do as much damage as a pseudo Ethernet link particularly if they use something like Piccolo.
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This part really hits home -> It can also interfere with the delivery of broadband Internet by xDSL technologies using telephone cables, slowing their data rate.
I was using the TP-Link AV200 model no: TP-PA211
It was TL-PA511 that was banned for producing too much noise disturbance. - Which is the model that BT are selling from their site (http://www.shop.bt.com/products/tp-link-av500-gigabit-powerline-adapter-kit-7V4C.html?utm_source=google&utm_medium=ppc%20product%20search&utm_campaign=PLA%20|%20Category%20|%20HomePlug).
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This part really hits home -> It can also interfere with the delivery of broadband Internet by xDSL technologies using telephone cables, slowing their data rate.
I was using the TP-Link AV200 model no: TP-PA211
It was TL-PA511 that was banned for producing too much noise disturbance. - Which is the model that BT are selling from their site (http://www.shop.bt.com/products/tp-link-av500-gigabit-powerline-adapter-kit-7V4C.html?utm_source=google&utm_medium=ppc%20product%20search&utm_campaign=PLA%20|%20Category%20|%20HomePlug).
what are you getting at Kitz ? does it matter which shop you purchase it from got my TP-PA211 from PC World and they produced too much noise disturbance they fall into the same category as TL-PA511 ::)
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I wasnt referring as to where you purchased it from.
I was referring to the fact it was ironic that BT was selling a product that is known to introduce surplus noise on to DSL.
If it was PCWorld then perhaps I wouldnt have found it quite as weird.
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I wasnt referring as to where you purchased it from.
I was referring to the fact it was ironic that BT was selling a product that is known to introduce surplus noise on to DSL.
If it was PCWorld then perhaps I wouldnt have found it quite as weird.
I suppose it's one way for BT to cap the end-user line, it looks as though these devices where rushed out for consumers well before detailed research into the negative impact at home & further afield :(
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I am getting the impression my hunches may have been correct, re overlap of smart meter and homeplug power line comms technologies.
I have no idea whether this is relevant to any current or planned UK smart meter roll out, but there does seem to be an emerging homeplug technology 'Homeplug Green PHY', aimed at the smart meter industry as well as other 'green' industries.
And if I understand correctly, it involves high speed power line comms within the home. Though I can't comment on how it would co-exist with vdsl, that would be pure speculation.
Purely as example, see following from qualcomm...
http://www.qca.qualcomm.com/ioe/homeplugr-green-phy
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Thats interesting. as is the mention of using your broadband connection. Plug it in and let it dial home to send whatever it wants when it wants. I guess nothing is private these days.
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have always wondered when you key in the 12 digit number from the bit of paper you use when topping up at a garage when using paypoint, so there has to be some comms going on from the Smart keypad to your power service provider is it though the powerline or broadband my guess it's over the end-users powerline communication :-\