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G4ZUF > PLC 25.01.02 00:01l 45 Lines 1819 Bytes #-8149 (0) @ WW
BID : 176_G4ZUF
Read: DG9NER DG0EF DG0CO DL8NCA DK2ZA GUEST
Subj: Re: Powerline (PLC) - new danger?
Path: DB0MRW<DB0ERF<DB0FBB<DB0GOS<ON0AR<ON0AR<GB7FCR<GB7STU<GB7SXE<GB7CIP<
GB7DID<GB7BED
Sent: 020124/1726Z @:GB7BED.#21.GBR.EU #:11870 [Bedford] FBB7.00g25 $:176_G4ZUF
From: G4ZUF@GB7BED.#21.GBR.EU
To : PLC@WW
G4ZUF/TPK 1.81 Msg #:176 Date:24-01-02 Time:15:49
>--> Contact your radio regulations authority and ask them to put down
>limits of powerline-HF-radiation as low and strict as any possible.
Since many of the staff of said authorities will be offered careers
with the commercial companies offering the services, nothing will
come of that complaint.
In any case, if the service is carried on a cable near you it makes
no difference how low, or strict, the signal is.
>--> Talk to your local MP or any political representative to do
>something to protect radio frequencies. This might be very effective
>in countries with a high number of hams like Japan or the USA/Canada
>etc.
Tried before.
The MP sends the letter to the RA, who reply to the MP, who sends their
reply to YOU. YOU reply to the MP, who sends YOUR reply to the RA, who
reply to your reply to your MP, who sends it to you.....after a few
to-and-fros' you get the message and give up.
>--> Inform all hams about new facts and, if you have knowledge about
>PLC, tell internet users something about the disadvantages. PLC is
>very prone to all kind of interference, industry is denying this, but
>facts prove to be different. The fantastic speed they claim is shared
>between a high number of users linked to one node at the nearest
>transformer.
Most internet users, offered low cost broadband access, would happily use
it even if it killed television stone dead.
The interference problem has been solved, so I read, by using multiple
carriers within the signal...effectively "hopping" frequencies to
overcome any problems.
Most amateurs just don't seem to realise that when this system is used near
them, their noise floor on hf is quite likely to go up to S9+loads...
Time will tell.
John
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