Broadband over Powerlines

lettucestewElectronics - Devices

Nov 21, 2013 (4 years and 1 month ago)

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BPL

Broadband over Powerlines

Jory McIntosh, KJ5RM

ARRL Assistant Director

West Gulf BPL Task Force


KJ5RM@KJ5RM.NET

HTTP://WWW.TEXASBPL.COM



TXU/Current Technologies BPL
Information

What is BPL?


BPL: Broadband over Power Lines


Designed to
turn power grid into high
-
speed network and
internet access.


Power Companies also use BPL for “Smart Grid”


Uses power lines to transmit data using RF from 2
to 80 MHz


Throughput speeds per line 200Mb/ 3Mb per user


Uses 802.11b/g or direct connection to get signal
from pole to user.


The Technology of BPL


Three Parts of BPL


Internet connection to Injector 802.11b/ethernet


Injector “injects” data onto line


Repeater , every 1200 feet boosts signal


Connection box. 802.11b/g, or Ethernet,
HomePlug

Our Concerns


Power lines are long unshielded wires.


What is your antenna made of? Wire…


What happens when you inject a RF signal
on a wire? It becomes an antenna!!


Look around you and see how many
powerlines there are.


Remember they are using 2
-
80Mhz from
75M thru 6M


Past Dealings

Irving, TX

System Amperion

Results from test In
Irving using Yeasu FT
-
100, Full DSP, 2.4 Khz
Filter ATAS
-
100
Antenna, 150 feet from
BPL Unit.


Freq

Control

BPL

7.208

S3

S20+

10.105

S1

S20+

14.273

S3

S20+

21.074

S1

S60

28.342

S0

S20+

50.132

S1

S20+

144.340

S0

S9

Houston, TX

System Amperion

Preliminary Results from test in
Houston

Freq

Control

BPL

14.000

S0

S30+

14.100

S1

S9



















Current Technology


Based out of Germantown, Md


Provides high speed broadband service


Provides powerful Intelligence for electrical
distribution networks


Electrical distribution network security


Currently installing system in Cincinnati, OH


TXU and Current


New partnership announced 12/19/2005


Current to implement on 70% of Grid in
Dallas and Fort Worth


2 million homes to be passed.


TXU to use “network” for “SmartGrid”


Internet gravy


The System

Specs


High Voltage Lines


31 to 48 Mhz


Ability to notch frequencies or ranges of
frequencies


Home Plug for house/business side


4 to 30 Mhz


30 Db notch on all ham bands but 60 meters


Quite operations


Transmits only when needed


New technology to fix 60/add movable notches

Cincinnati Install


5,000 Homes passed working on 50,000


Hams have installs in their homes for testing.


No interference complaints filed


Test shows minimal interference to amateur radio
bands


Interference confined to within 200 feet of home.


Slight increase in background noise


Squawks and short burst of noise heard


Shortwave bands more heavily affected.


What to expect???

Theoretically


Increase in background noise HF ham
bands


60 Meters S9 + when active possible


Other HF Bands
-

Increased background
noise and some momentary noises


Shortwave bands S9 + when active


31 to 48 Mhz S9 +


No interference to system from Hams

What you will see

What you will see

What you will see

Addresses and Links

ARRL BPL information Page


http://www.arrl.net/BPL/

TEXAS BPL Information


http://www.texasbpl.com

HomePlug


http://www.homeplug.org

Current Technologies


http://www.currenttechnologies.com


Closing and Discussion

We are not against BPL just the
harmful interference it produces