From Qnews 25 April 2004 Edition

PLC/BPL Pilot in Hobart, Tasmania
The main energy authority, Aurora is in the process of implementing a small
pilot of Power Line Communication (PLC) by providing broadband internet on
a test basis.

Aurora has been implemented the system to better understand the technology
and its potential to support commercial services.

The system uses the DS2 chipset which utilises Orthogonal Frequency
Division Multiplexing (OFDM) - with multiple discreet carriers approximately
every 1.1 kHz between about 1.6MHz and 30MHz.

The system that has been installed allows for certain frequencies to be
removed from the range of spread spectrum frequencies used. Theoretically
allowing the filtering out of the amateur HF frequencies. The OFDM
technique is also utilised by many Wireless LAN systems that operate on
2.4GHz.

Multiple carriers can usually be heard on the 40 and 20 metre band in the
form the system is normally configured. The signal should sound like
multiple carriers as you tune across the band that are approximately 5kHz
apart. When the system is idle you will hear a click, click approximately
every second.

Please keep your ear out for BPL/PLC type interference on the HF bands and
keep a log of the interference that includes
time/date/band/strength, etc. (AUDIO report by Justin, VK7TW, Southern
Branch President and VK4BAT


--
*Eliminate Qru, Qrt & Broadband over Power Lines to ragchew!
**Stephen Newlyn, VK5VKA. G'day from the City of Elizabeth, South Australia.
***Visit the "Stop BPL" page
http://homepages.ihug.com.au/~vk5vka/stopbpl.htm
****Visit my Home Page at http://homepages.ihug.com.au/~vk5vka/index.html


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