BPL Broadband over Powerlines Jory Mc. Intosh, KJ 5 RM ARRL Assistant Director West Gulf BPL Task Force KJ 5 RM@KJ 5 RM. 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 200 Mb/ 3 Mb per user § Uses 802. 11 b/g or direct connection to get signal from pole to user.
The Technology of BPL § Three Parts of BPL – Internet connection to Injector 802. 11 b/ethernet – Injector “injects” data onto line – Repeater , every 1200 feet boosts signal – Connection box. 802. 11 b/g, or Ethernet, Home. Plug
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 -80 Mhz from 75 M thru 6 M
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 S 3 S 20+ 10. 105 S 1 S 20+ 14. 273 S 20+ 21. 074 S 1 S 60 28. 342 S 0 S 20+ 50. 132 S 1 S 20+ 144. 340 S 9
Houston, TX System Amperion Preliminary Results from test in Houston Freq Control BPL 14. 000 S 30+ 14. 100 S 1 S 9
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 “Smart. Grid” § 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 S 9 + when active possible § Other HF Bands - Increased background noise and some momentary noises § Shortwave bands S 9 + when active § 31 to 48 Mhz S 9 + § 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 Home. Plug § http: //www. homeplug. org Current Technologies § http: //www. currenttechnologies. com
Closing and Discussion We are not against BPL just the harmful interference it produces
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