[RFI] I wish this guy had interviewed Ed Hare also...

Michael Tope W4EF at dellroy.com
Thu Jan 8 09:32:37 EST 2004

Hi Dave,

My understanding of the Home Plug standard was that it notched the ham
bands by 30dB (after prodding by ARRL), so there may actually be some
truth to the first part of the citation. In any case, it was the second
of the citation that I was referring to:

>"[Interference] just doesn't exist," Birnbaum said. "They based a lot of
> their assumptions on outdated noise flow analysis."

"Outdated noise flow analysis"  - what the hell is that?? Sure sounds like
bullsh#% to me :):)

BTW, I am pretty sure the homeplug hardware does their hamband notching
in the digital backend of the receiver, so it most likely that it has the
susceptibility to RF overload from nearby transmitters as the un-notched
systems (e.g. you'll be able to crash it with a 50 watt mobile).

73 de Mike, W4EF.........................

----- Original Message -----
From: <k1ttt at arrl.net>
To: <rfi at contesting.com>
Sent: Thursday, January 08, 2004 8:53 AM
Subject: Re: [RFI] I wish this guy had interviewed Ed Hare also...

> > Here is my favorite quote, Jason:
> >>But Current Technologies LLC, which offers BPL service in the Cincinnati
> > and Rockville, >Md., areas, can't find interference caused by its
> > said Jay Birnbaum, the company's >vice president and general counsel.
> > Current Technologies uses a technology standard >called HomePlug,
> > to not interfere with other radio signals.
> >
> as i understand the homeplug stuff it adapts the channels it uses to avoid
> interference to itself.  in doing so it would avoid frequencies being used
> locally by other services.... being used to transmit that is.  so if you
> are listening on a frequency it can't avoid interfering with you unless
> you are listening to something else that is strong enough to interfer with
> the homeplug communications.
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