In article , Carl R. Stevenson
wrote:


Hi Carl,

I made a trip to the Cape Giradeu MO test area. This ws a very limited
test area encompassing maybe 10 - 15 homes judging from the inductors I
saw on the utility poles. I found that BPL seems to operate in an
"idle" mode and a active demand mode.

When in the idle mode the intereference from the upper BC band through
20 meters is quite noticable and was registering S7 - S9 on the meter
of my IC-737 connected to a Hustler antenna with 40 and 20 meter
resonators attached. It was also audible from about 1520 and up on the
BC band.

When in active mode, (probably when someone was downloading something)
the S meter readings went to 30+ over S9 and the top of the broadcast
band was seriously hacked up. I also detected effects at the bottem of
the FM broadcast band. The highest reading I saw was on the 20 meter
band. When in the active mode, I could detect serious levels of BPL
interference at 500 feet growing weaker out to about 1,000 feet when
it dropped below my traditional mobile noise level.

After hearing it and seeing it's potential for devestating interference,
I am of the opinion that it will be a serious problem for anyone using
the spectrum between 1.6 and 88 MHZ. In addition, I am willing to bet
that the radiation will be rich in harmonics.

73
George
K3UD

EX- WA3DNC, W3GEO

"W1RFI" wrote in message
...
Write or call your local AM broadcast stations and tell them that
thier signal is being wiped out and you can't recieve them.

When I was in Emmaus, PA, I turned on the car AM radio and didn't hear any
noise on the AM broadcast band. I believe that some of the reports may
have
been in error.

73,
Ed Hare, W1RFI

I can confirm what Ed reports above ... on my first drive through the Emmaus
BPL area, I didn't have my FT-817 with me ... I noted little/no BPL noise
in the AM broadcast band ... perhaps a bit of extra noise at the very upper
end of the band around 1600 kHz, but nothing like what exists on 80-15m.

Again, I want to help Ed drive the point home - false claims of "BPL
interference"
will do a LOT of harm to our cause ... I encourage anyone who thinks they
might
be experiencing BPL interference to communicate with Ed and let him help to
verify
things.

I also encourage everyone to send a donation to the ARRL's BPL fund - you
don't have to agree with *everything* the ARRL does to be willing to help
to overcome this major threat to our future on HF.

Carl - wk3c