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Power Line
Broadband - Internet Over Power-lines
BPL (Broadband over Power-Lines) or PLC (Power-Line Communications) is a technology that has been on the books for some years now, only recently though has it started to find its footing.
As the name suggests, BPL involves using existing power-lines to transmit broadband data. This revolutionary technology could be used to bridge the digital divide between rural and urban communities with regards to internet access.
Even though internet penetration rates have rocketed over the years, especially with the introduction and uptake of broadband technologies there is still a large portion of the population that have either zero or limited access to the internet. Such customers are often found in rural areas, outside the reach of broadband technologies.
BPL however, works on the premise that nearly every inhabited building throughout the country has electrical outlets, and it is these outlets that BPL services plug into.
As mentioned, the idea behind using existing power grid infrastructure to transmit data signals is not new, and in fact this is something that electricity companies use to monitor power line performance.
The reason that this technology could be so easily incorporated is because current electrical infrastructure uses an alternating current (AC), which vibrates at a different wave length to the radio-frequency (RF) waves that data uses. Therefore, they can both travel down the same wiring.
However, instead of being able to transmit the data signals at the power source (i.e. power plants), which would have been the easiest option, the data signals have to be dropped onto the lines a little closer to home. This is because at the source of the power, the voltage is so high (or “noisy”) that it would cause too much interference with the data signals.
Therefore, BPL drops the data signals off onto the less “noisier” medium-voltage lines. From here the signals pass through various repeaters and couplers to ensure they reach their destination intact.
At the end of the line there are various ways that broadband can enter buildings. This can either be via a traditional power outlet which plugs directly into an Ethernet port, broadband WiFi hotspots etc. If you would like to compare broadband packages in your area then the internet is an excellent source.
About the Author
Liam is a UK based writer.
power line noise, What can i do to receive dcf77 signal ?
I have a dcf77 clock and i want to receive the signal from the German station on 77.5khz. That is not easy, because of power line noise in the frequency. I am a radio amateur and hear noise with either my yaesu vx2 or regular radio at the frequency. What can i do ?
http://search.yahoo.com/search?p=German%20station%20on%2077.5khz.
what not to do on power lines