A couple days ago I saw an article
address the RF energy that is leaked off of power lines
when the BPL (Broadband Over Powerline) scheme is used for
the "Last Mile" solution to proving ubiquitous Internet -
as well as for implementing the Smart Grid.
there are proposals to actually license portions of the
spectrum specifically for BPL. It seems to be tantamount
to an admission that the leakage cannot be controlled.
Do smart grids need special
BPL interference has been a
concern for Amateur Radio operators, and they have been on
the front line in the fight to either prohibit the
practice altogether, or to strictly monitor and control
it. Even after the initial installation is qualified,
equipment degradation and system modifications are not as
tightly controlled so the potential for excessive
interference is great. Enforcing compliance is typically
much more difficult that initial conformance.
Oddly, there was also recently another article that claims
since the BPL frequencies are primarily above 30 MHz, the
interference with most heavily used Ham bands will not be
affected. Supposedly, the author of the article verified
that with ARRL HQ. I tried to find the article - probably
on one of the engineering websites like EDN. It was just a
couple days ago, but I read so much stuff that I can't
keep track of it all. If I find it, I'll post the URL.
That statement does not comport with recent chatter on
the ARRL website.
FCC Continues BPL Debate
It Seems To Us: Now We Know
Interesting related article:
FCC to Utilities: Don't Look
to Hams to Pay for Your Testing
a recent IEEE article on Smart Grid progress
Smart Grid Projects Pick Up
- Kirt Blattenberger
RF Cafe Progenitor & Webmaster