Let's forget the tech speak, and the engineering talk of decibels and signal levels.
Here's what is happening, in plain English:
What we are facing is the design and high-powered marketing of a whole large family of new products which cannot operate normally without ENDING SHORT WAVE RADIO, FOREVER.
Period.
It's no more technical, or esoteric than that. NO MORE SHORT WAVE. EVER. The entire HF band, 2 to 29 megahertz, JAMMED by the most highly distributed system of wideband HF noise generators EVER INVENTED. If WE do not act proactively, NOW, these will be in every building in the industrialized world.
Is that simple enough?
The latest such invention being heavily marketed, amid glowing praise in magazines, sends audio through power lines using HF carriers at a high enough power to jam the entire spectrum in a radius of hundreds or thousands of feet depending on conditions.
This particular product was tested by someone on the UKQRM list and was found to have NO NOTCHES! Amateur radio frequencies are NOT PROTECTED! This matches the experience in Portugal, where products are distributed without these notches.
Got that? No more utility. No more ham. No more use of marine USB while dockside. NO MORE SHORT WAVE RADIO, ANYWHERE IN THE INDUSTRIALIZED WORLD, EVER AGAIN.
I don't know why I bother with this cause. The apathy is complete, and the regulatory indifference is shocking. Unless a movement starts, right now, involving people who traditionally distrust political movements, it will be over. The regulatory agencies will say, well, that's the breaks. Sorry about that.
The people of this Earth will lose the most accessible and democratic (small d) communication medium ever invented. This will have a tragic effect on all history.
Now... is that clear enough?
Showing posts with label homeplug. Show all posts
Showing posts with label homeplug. Show all posts
Tuesday, March 17, 2009
Monday, November 17, 2008
Alleged HomePlug Document Suggests Awareness of Interference Issue
Publically, the two standardizing industry associations for the HomePlug and DS2 powerline communication standards act as if there's no problem with RF emissions from devices which are basically wideband transmitters putting appreciable HF energy into AC power lines, which unintentionally serve as very efficient transmitting antennas.
A document alleged to be an internal "executive seminar" at the HomePlug Alliance has been posted to the files section of UKQRM. If this is real, it strongly suggests that someone working for the HomePlug Alliance is completely aware that a problem exists. Members of UKQRM can go to that group's files section and download this document.
What we have here is something at least resembling an internal presentation of PowerPoint-like slides stored as a .PDF file. Its heading on each slide is "Homeplug Executive Seminar." It shows measurements proving that their devices do not meet European electromagnetic compatibility standards, and had to gain the CE mark by exploiting loopholes. Subsequent slides claim that it's all just a problem with the standard test setup, which is simply unfair to powerline devices, that's all.
If this means that the whole idea of sending data through active power lines is so stupid that excessive RF power must be used to make it work even a little, I agree.
From page 4:
This is accompanied by a chart which looks like a dBuV over frequency run. Indeed, it shows 85 dBuV all the way across HF under their test parameters, except for sharp notches in some (NOT ALL) ham radio bands. This is indeed well in violation of EMC standards.
What do you do if you fail the test? Why claim that the standard is too old fashioned, of course, and rig up your own test so your product passes, despite a known EMC problem. Continuing, on page 5:
The "Final Solution?" Why, pressure international bodies to change the law, of course. Page 6:
And, if that doesn't work, of course maybe if you lobby hard enough, the ITU will simply clear out a huge swath of HF for you. Page 8:
In other news, BPL is not dead. IBM announced that it seeks to build an extensive system to bring broadband to rural areas. In other words, if you try to escape the cities, you will find that HF has been jammed in the country too.
I'm glad I'm not a conspiratologist. The idea of a worldwide total blockage of HF would have me going on Art Bell (or his replacement) by now.
A document alleged to be an internal "executive seminar" at the HomePlug Alliance has been posted to the files section of UKQRM. If this is real, it strongly suggests that someone working for the HomePlug Alliance is completely aware that a problem exists. Members of UKQRM can go to that group's files section and download this document.
What we have here is something at least resembling an internal presentation of PowerPoint-like slides stored as a .PDF file. Its heading on each slide is "Homeplug Executive Seminar." It shows measurements proving that their devices do not meet European electromagnetic compatibility standards, and had to gain the CE mark by exploiting loopholes. Subsequent slides claim that it's all just a problem with the standard test setup, which is simply unfair to powerline devices, that's all.
If this means that the whole idea of sending data through active power lines is so stupid that excessive RF power must be used to make it work even a little, I agree.
From page 4:
Safety, immunity and harmonics are correct but almost all PLC devices pass over the CISPR 22 class A, B limits so failed the test and we could not generate (directly) the DoC (Declaration of Conformity) needed for Europe
This is accompanied by a chart which looks like a dBuV over frequency run. Indeed, it shows 85 dBuV all the way across HF under their test parameters, except for sharp notches in some (NOT ALL) ham radio bands. This is indeed well in violation of EMC standards.
What do you do if you fail the test? Why claim that the standard is too old fashioned, of course, and rig up your own test so your product passes, despite a known EMC problem. Continuing, on page 5:
Several studies have been done on this current issue
• Some experts have demonstrated that the current interface used for the test was not accurate for the powerline and have proposed their own schematics (gaining up to 10 dB so passing class A and B)
Few competent bodies have proposed their own method
• They created their own measurement method and built for the manufacturer, the TCF (Technical Construction File: this is the second official way to gain the CE mark, specially when a unit do not follow at 100 % the harmonized standards)
• So they demonstrated with their method that the unit will not harm the “network”
• With this TCF, the CE mark could be affixed to the product so the PLC device could be sold in Europe
The "Final Solution?" Why, pressure international bodies to change the law, of course. Page 6:
A sub group of the CISPR was created to work on this issue
• The interface used to test the CISPR 22 test was developped a long time ago and is not fair for a measurement on the power line
• CISPR SC I PLT TG is working to find a test method that will properly test power line communications ports.
And, if that doesn't work, of course maybe if you lobby hard enough, the ITU will simply clear out a huge swath of HF for you. Page 8:
As of today the best case for this new CISPR I 89
standard is 2009
ITU-R: We have also investigated the possibility to
obtain a dedicated band for the PLC, it will take if
accepted around 10 to 15 years…
During this interim period the TCF will be always
the best compromise but could be subject to
discussion…
In other news, BPL is not dead. IBM announced that it seeks to build an extensive system to bring broadband to rural areas. In other words, if you try to escape the cities, you will find that HF has been jammed in the country too.
I'm glad I'm not a conspiratologist. The idea of a worldwide total blockage of HF would have me going on Art Bell (or his replacement) by now.
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