12Mbps Powerline Broadband Trial Unveiled

An anonymous reader writes "The tiny state of Tasmania in Australia has kicked off the country's first commercial powerline broadband trial. The service is capable of providing Internet connectivity of up to 12Mbps but during trials, it will be limited to 4Mbps. Costs will range from $12 (A$15) to $67 (A$80) per month for speeds between 256Kbps and 4Mbps. Powerline broadband has received wide support from leading vendors including Intel, Motorola and Cisco Systems -- all of whom support an organisation called the HomePlug Powerline Alliance."

Comments

BPL plays hell with radio.

[Nethead]

Many, if not all, of the BPL designs that have been deployed to date suffer from a number of technological weaknesses. Perhaps the most critical of these is that BPL is seriously degraded by nearby transmissions from low-powered transmitters from sources like Amateur Radio or CB. In several BPL cities, amateurs have done experimentation that shows that as little as 5 watts of power from a nearby radio transmitter can seriously degrade the performance of BPL. In some cases, the interference logged off a BPL user, requiring a reconnection to the network.

This fatal flaw will seriously limit the way that BPL can be deployed and will decrease the reliability of a BPL system in any area where it is possible that nearby radio transmitters could be operating. Under the FCC's rules, BPL is an unlicensed device that must accept any interference caused to it by authorized radio services. In the past, and through decades of experience, such interference is rare to other broadband services, such as DSL, cable or satellite. However, in all of the BPL areas tested for susceptibility so far, the unshielded wiring that is used by BPL apparently picks up nearby radio transmitters and overload or otherwise degraded the performance of the system. Although this has been seen at power levels as low as 5 watts from Amateur Radio transmitters, Amateur Radio transmitters can use as much as 1500 watts of power, greatly extending area over which BPL will be unable to tune out these over-the-air signals.

See the ARRL.org website for more info. http://www.arrl.org/tis/info/HTML/plc/ 73 de W7COM