TELECOM Digest OnLine - Sorted: ARRL Enthused About New Motorola BPL Technology

ARRL Enthused About New Motorola BPL Technology

Jack Decker (jack-yahoogroups@withheld_on_request)
Fri, 27 May 2005 12:22:40 -0400

For those who have been waiting for your power company to offer
broadband service, this might be the way the power companies SHOULD
implement it.

ARRL enthused about new Motorola BPL technology

May 26, 2005 11:10 AM
By Donny Jackson

ARRL, the national association for amateur radio, expressed optimism
that a broadband-over-power-line (BPL) system announced this week by
Motorola will not generate harmful interference with amateur-radio

Dubbed Powerline LV, the solution represents Motorola’s first
product in the BPL space. Whereas most BPL systems require the
broadband traffic to travel solely through the electric grid,
Powerline LV uses Motorola’s high-speed wireless Canopy system for
backhaul to the electricity pole or pad-mounted transformer, from
which the signal is sent to the house via the electrical wiring, said
Dick Illman, a member the advanced wireless team in Motorola special
markets division of engineering.

This architecture design removes the need for the broadband signal to
travel over the medium-voltage (MV) wires that link substations to
transformers. Radiation from BPL-enabled MV wires is the primary
source of interference for amateur-radio operators, said ARRL
spokesman Allen Pitts.

Low-voltage (LV) wires used to serve homes from electrical poles do
not create as much interference as MV wires, and Motorola has taken
other steps to mitigate interference, including the use of Homeplug
home-networking technology and a device that blocks signals from
entering amateur-radio frequencies, Pitts said.

"We're not ready to endorse it yet, but we are absolutely very
encouraged by it," Pitts said. "Amateur radio operators were
never against any technology; we're against interference. If
there's no interference, we're all for it [BPL]."

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