Conan Ford wrote:

I see that the FCC has approved modified part 15 rules to allow BPL
deployment. If I understand correctly, without the modified rules the BPL
providers are emitting more interference than permitted. I see no
dissenting opinion from anyone in the FCC board, and only a cursory mention
to "licensed radio services" and "amateur radio." The only protection
action to be taken is notching in case of complaints from users of amateur
radio and "licensed radio." Aeronautical communications are mentioned as
needing protection (no BPL on those frequencies entirely). If BPL is so
interference-free as the proponents would lead people to believe, why the
need to notch the aeronautical bands? Obviously interference will be both
very high and long distance. Is this the end of shortwave around the
world? I have no doubt that being in southern Canada, this will make
hearing shortwave broadcasts more difficult. In BPL deployed areas in the
USA, I wouldn't be surprised if it is impossible.

The test will come when someone files a law suit against a BPL provider,
siting interference to some area of the HF spectrum. Until then it's
hard to say what the future of BPL will be. Hopefully the BPL industry
will be discouraged by the constant threat of litigation.


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