"Dick Carroll" wrote in message
...
Carl R. Stevenson wrote:

"James Wilson" wrote in message
. ..

What does BPL sound like? Can someone post a wav file somewhere so it
can
be identified? Is it worse that the Pennsylvania QSO party?


The video on the ARRL website shows a couple of BPL variants ...
one that uses SS and another (test area 4) that uses OFDM.
They sound different.

Again, I cannot over-emphasize the importance of making SURE
that complaints of "BPL interference" are REALLY from BPL and
not some other source.

The LAST thing we need now is a bunch of people "crying wolf."
(Real complaints are one thing, crying wolf will only HURT us.)

73,
Carl - wk3c



You raise an interesting question, Carl. How exactly should the
average ham go about proving that the RFI is indeed BPL, when the BPL
people say
"That's not us!'??


BPL has a unique "signature" (in the spectral/time domains) that can be
used to ID it.

Since there are different systems (SS from main.net and OFDM from Amperion,
for example) they have different signatures, which are distinct from other
sources
of interference and more traditional power line noise (of course the
utilities are
responsible for fixing the latter, too ... though their record is poor).

Carl - wk3c