PLT Buzz Reaches Geek Sites

Thanks to the efforts of the UKQRM group, the disastrous effect of powerline communication devices on HF radio is becoming publicized where it matters. This is in the computer professional press, which reaches the people who make the purchase decisions.

An informative story, which is about as technically correct as writing about the radio hobby ever gets, appears on The Register site:

'Interfering' BT Vision attracts campaigner glares
Ham radio enthusiasts call up trading standards

By Bill Ray
Posted in Telecoms, 15th January 2009 11:33 GMT

Campaigners complaining about interference generated by BT's Vision product have financed independent tests to show that the kit BT is pushing fails to conform to the appropriate EU standards, prompting a complaint to trading standards officers.

Shortwave radio users have been complaining for a while about interference generated by networking over mains wiring, with BT taking the majority of the flak, but until now the protestors have been complaining to Ofcom on the basis of illegal broadcasting. By demonstrating that retailers are selling kit that fails to meet EU standards the protestors could prevent its sale, not to mention the possibility of fines for those manufacturing or importing the kit.

...

This was also excerpted on ISPReview, another UK IT site.

Both embed this latest YouTube video, ominously (and accurately) entitled, Power Line Signalling: The Death of H.F. Radio.

Other links:

UK citizens' petition to save shortwave
UK interference report database
UKQRM web site

Also check out the UKQRM video page for a comprehensive look at what is going on in the UK (and starting to happen in the USA!).


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Added 1/25/08

The discussions on geek sites have led to hostile comments to the effect that short wave radio is obsolete, and should be abolished anyway. Apparently, we have done a poor job of informing the public of the consequences of eliminating the only long-distance communications system that does not depend on wires and/or links controlled and maintained by third parties.

Some people have even made remarks to the effect that they will stop using their PLC adapters when their cold dead hands are pried from them.

It would appear that we have something of a fight on our hands.

Bring 'em on.

British Telecom to Continue Specifying Spectrum Polluting Equipment

In a move that surprised everyone with any knowledge of the current situation, British Telecom has renewed its contract with Comtrend to buy its DS2-based PowerGrid 902 home networking adapters for another year.

This is despite full knowledge that the normal on-spec operation of the DS2 chipset continuously transmits a strong signal across most of HF, except for an audible reduction in known international amateur bands. Utility and international broadcasting DXing (including DRM) cannot co-exist with this technology, and everyone knows it.

It is obvious that BT intends to deploy this equipment in millions of homes throughout the UK, while solving the few interference complaints on a case by case basis. Note that this solution requires that the users of the home video system will approve installation of a hard-wired network. If they don't, the complainer will need a new hobby. Too bad about all that money they spent on receivers and equipment. The only recourse left will be a long, expensive, and unpredictable test case in the courts, against extremely well funded and connected corporate interests.

To show how well this approach is working, note the case of longtime Utility Logs contributor "Mike" in West Sussex. He is on something like his third round of Ofcom complaints and technician visits by Ofcom and BT to his neighbors. Every time one is resolved, a new one starts up within a matter of weeks.

It should now be completely obvious that public access to short wave radio is now considered expendable by most of the world's governing bodies. Maybe someone will try to change this, and maybe they won't.

Here's the announcement.