internet over transmission lines

Status
Not open for further replies.
Jhaney said:
My main question would be how does the communications signal not get trashed while going through transformers and substations?
Click to expand...
If I'm not mistaken (hey, it could happen :cool:), they don't pass through those devices; they'd have to be 'injected' and 'extracted' from the lines, bypassing the transformers.
 
They have been talking about this technology for years now....

...it will probably be many more until it ever really happens.

My question is why would any cmpany be investing in wired communications when it is ovbious that wirelss technology is the future of communications.
 
communications over building wiring is old technology. I have put in numerous clock systems that communicated over the building premise wiring. We had to put couplers (I believe that is what Simplex called them) around all of the transformers.
I also put in a metering system in a high rise that communicated over premise wiring. I believe it used 36 hz pulses to communicate.
 
Well if the truth be told, it has been done for decades. Just not not to homes, or biz. There are some industrial installations with it. In the POCO biz we call it telemetry.

Sounds like I am kidding but I am not. POCO's have been using carriers on high voltage lines since WWII. Basically it is low frequency RF signal using Suppressed Carrier Single Side Band a form of AM Ham radio operators use.

I have not heard a lot about using POCO lines for broadband, it is possible, but the bandwidth would have to be pretty small compared to COAX and FIBER.

But to answer your question getting it around transformers is easy by just using a coupling capacitor from primary to secondary.

POCO use the same principle for telemetry. They use a huge chokes and if you are observant you will see them at some substations as they are huge open air coils on each phase, and then you will see a tap going to a large box with insulators and that is the Coupling Capacitor which is connected to a balancing network and a coax going inside to the control house radio equipment.
 
Thanks for your answers guys this is pretty cool stuff. Especially since there are alot of rural areas around me that can't get any kind of high speed internet. They have been working on wireless around here for I think about 2 years and still can't get it right, which is unfortunate for my dad he's still on dial up.
 
This sounds like power line carrier type technology, the orange box tried it for a while to control lighting, but did not work well. Seems like I heard they are trying it again somewhere. They may have improved the technology.
 
Jhaney said:
Thanks for your answers guys this is pretty cool stuff. Especially since there are alot of rural areas around me that can't get any kind of high speed internet. They have been working on wireless around here for I think about 2 years and still can't get it right, which is unfortunate for my dad he's still on dial up.
Click to expand...
what about direcway for internet?
 
Status
Not open for further replies.
Top