Powerline Communication (PLC), Myths and Realities
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Tokionis
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Dover82 -
Dover82 -
Hello,
After browsing various forums, I realize that the PLC technology is not yet well understood by its users and that the wildest claims are circulating. To demystify PLC a bit, here are some clarifications.
Frequency
The 200M PLC uses frequencies between 2 and 34MHz. For your information, my son's remote-controlled car operates in a band of 27MHz and he doesn't come to complain every 5 minutes saying it's not working, which allows me to introduce the topic of amateur radios further on.
Meters
The PLC easily passes through your electric meter; all commercial deployments use this entry point to provide subscribers with the operator's service. Only a few meters block the PLC signal, but they represent less than 2% of cases.
Security
Your neighbor, even if they have the same PLC boxes as you, will not be able to capture your PLC signal because the communications are intrinsically linked between the transmitter and the receiver. This is achieved through pairing. Add to that a DES encryption of your key and that's it. Even though anything is possible (with significant means in our case), I challenge anyone to execute a "hack" on a PLC system.
Amateur radios
Amateur radio operators complain about "outdoor" PLC because it pollutes the frequency bands they use. I specify "outdoor" because the use of in-home PLC is confined to a house or apartment, whereas outdoor it is broadcasted over aerial lines that act as transmitting antennas. It is true that with the first "outdoor" experiments, the "amateur radio" frequencies were not respected. Nowadays, that is no longer the case. Indeed, a "notches" system allows masking these frequencies and the site is subject to evaluation by a regulatory authority. (frequency list available upon request for those interested).
Signal propagation
The "in-home" PLC signal is transmitted over your electrical network through the phase and neutral. If you have three-phase power, the signal is also transmitted on the other phases through a "cross-coupling" phenomenon. The "cross-coupling" works very well with frequencies above 8MHz, so there is no need to worry on that side.
UDP-TCP performance
The DS2 chipset is advertised at a theoretical phy rate of 200Mbits. Unfortunately, the efficiency of the MAC layer is around 50% for TCP and 60% for UDP. The "TCP window size" on Windows platforms is not dynamic (it is on Linux), and the transfer rate is significantly reduced because the default value in the registry is too small, unnecessarily multiplying acknowledgments and throttling performance.
Adding PLC modules
With 2 modems in point-to-point, the 50% in TCP and 60% in UDP rule still holds. A PLC network shares its bandwidth among all modems present on the network. This is called a time domain. As a result, if you add a 3rd modem to your setup, there will be an equitable distribution of bandwidth when your modems want to transmit at the same time. This is true if they all have roughly the same physical performance. The more modules you add, the more latency will increase.
P1901 standard
A working group at the IEEE is about to finalize a standard on PLC in order to standardize all technologies.
http://grouper.ieee.org/groups/1901
After browsing various forums, I realize that the PLC technology is not yet well understood by its users and that the wildest claims are circulating. To demystify PLC a bit, here are some clarifications.
Frequency
The 200M PLC uses frequencies between 2 and 34MHz. For your information, my son's remote-controlled car operates in a band of 27MHz and he doesn't come to complain every 5 minutes saying it's not working, which allows me to introduce the topic of amateur radios further on.
Meters
The PLC easily passes through your electric meter; all commercial deployments use this entry point to provide subscribers with the operator's service. Only a few meters block the PLC signal, but they represent less than 2% of cases.
Security
Your neighbor, even if they have the same PLC boxes as you, will not be able to capture your PLC signal because the communications are intrinsically linked between the transmitter and the receiver. This is achieved through pairing. Add to that a DES encryption of your key and that's it. Even though anything is possible (with significant means in our case), I challenge anyone to execute a "hack" on a PLC system.
Amateur radios
Amateur radio operators complain about "outdoor" PLC because it pollutes the frequency bands they use. I specify "outdoor" because the use of in-home PLC is confined to a house or apartment, whereas outdoor it is broadcasted over aerial lines that act as transmitting antennas. It is true that with the first "outdoor" experiments, the "amateur radio" frequencies were not respected. Nowadays, that is no longer the case. Indeed, a "notches" system allows masking these frequencies and the site is subject to evaluation by a regulatory authority. (frequency list available upon request for those interested).
Signal propagation
The "in-home" PLC signal is transmitted over your electrical network through the phase and neutral. If you have three-phase power, the signal is also transmitted on the other phases through a "cross-coupling" phenomenon. The "cross-coupling" works very well with frequencies above 8MHz, so there is no need to worry on that side.
UDP-TCP performance
The DS2 chipset is advertised at a theoretical phy rate of 200Mbits. Unfortunately, the efficiency of the MAC layer is around 50% for TCP and 60% for UDP. The "TCP window size" on Windows platforms is not dynamic (it is on Linux), and the transfer rate is significantly reduced because the default value in the registry is too small, unnecessarily multiplying acknowledgments and throttling performance.
Adding PLC modules
With 2 modems in point-to-point, the 50% in TCP and 60% in UDP rule still holds. A PLC network shares its bandwidth among all modems present on the network. This is called a time domain. As a result, if you add a 3rd modem to your setup, there will be an equitable distribution of bandwidth when your modems want to transmit at the same time. This is true if they all have roughly the same physical performance. The more modules you add, the more latency will increase.
P1901 standard
A working group at the IEEE is about to finalize a standard on PLC in order to standardize all technologies.
http://grouper.ieee.org/groups/1901
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20 answers
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Thank you, Tokionis. That's a clear and straightforward explanation.
If I understood correctly, the PLC technique also works between two PLC devices that are plugged into the same house but on different electrical circuits that lead to different circuit breakers (for example: one circuit for the outlets on the ground floor and one circuit for the outlets on the upper floor)?
Thank you. -
I would like to provide some clarifications on Tokionis's first post.
The PLC operates on the home electrical network. It uses frequencies from 2 to 34 MHz. So all the electrical lines in the house, which easily make up 100 to 200 meters of cables, radiate like an antenna at these frequencies.
So when I hear that Wi-Fi waves might be dangerous... what can we say about PLC? It doesn’t radiate from a point, but practically from all the walls.
And we shouldn’t believe that the waves stop at the window and door. Wood and glass are transparent to these frequencies. So all the neighbors benefit from it!
As for performance, it depends on other emissions: electrical appliances that also radiate, other PLCs passing through the circuit breaker and all the electromagnetic radiation that is absorbed by these dozens of meters of wires.
One cannot compare a high-speed digital Ethernet transmission with basic analog commands of remote-controlled cars.-
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an Ethernet network, yes.
or even better, fiber optic.
It should be noted that equipping homes with twisted pair cabling is mandatory today for new constructions or major renovations (complete overhaul of the electrical installation), according to standard NF-C15-100.
And certainly, in the years to come, domestic fiber optic installation will become the standard.
In any case,
wireless systems of any kind have no future on a large scale: they remain reserved for mobility and temporary installations.
I categorize PLC in wireless transmissions: the wiring only plays a minimal role in the transmission.
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and ... There you go! -
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Absolutely. You won’t have any problems.
There is only one limitation when it comes to three-phase connections (in businesses), you need to install a phase coupler. But not in single-family homes or apartments.
The quality of the connection between two outlets depends on several parameters:
- actual distance (from outlet 1 to outlet 2, as the wires often go back through the electrical panel, often 30 to 100 meters)
- quality of the electrical cable (diameter) the thicker, the better
- presence of breakers in the panel (which filter and reduce the signal)
- direct outlet or plugged in parallel with another one (hence weakening)
Especially avoid any power strips (which mix several "noises" from multiple devices with the PLC)
Surge protector outlets that filter the PLC
Inverters are the same.
Prefer wall-mounted triple sockets
If your need is a simple Ethernet sharing, HomePlug 85 Mbps formats will suffice
If you want to do TV video, file sharing or video surveillance, prefer the HomePlug 200 AV
Some manufacturers provide software to measure real speeds between outlets.
Regards -
Great contribution, thank you, very useful.
Really.
--and ... There you go!
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Hello. When I read information dealing with "cpl", it is always about computer communication. Is there a type of box (one for input, the other for output) functioning like a simple switch? The button on the transmitting box controlling - by pulse or continuously - the receiving box, which itself controls a relay? Thank you.
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Hello to you,
thank you to brupala and Raoul.Luis.
So I recap (what I understood^^):
- transferring data on a continuous power supply is not an issue (remember the filter).
- that the PLC adapters (as they are) won't be of use to me.
- I need to build my own modem.
- I need to look more closely at ADSL technology which would be closer to my problem (in terms of distance issues).
Thank you again for your responses.
Elfstat. -
Hello,
I have a small installation to set up from my PC located near the only phone socket in the house to the place where I would like it to be (in the next room).
So, while I have no knowledge about this (I want to make that clear!), I've tried to gather information on different techniques. Enough negative feedback leads me to believe that Wi-Fi isn't the best solution: inconsistent technical performance, potential health risks... While this is always the case, aside from opinions that are inevitably contradicted by others, it's nearly impossible to find something reasoned and understandable for a layperson....
The same problem arises with powerline adapters: while they seem quite convenient, there are evidently some reservations as well: Kiki's comment illustrates this well, even though no one responds to her remark about the health risks of wave propagation...
In short, after all this, I assume there's no one-size-fits-all solution, and everyone must find what works best for them; that said, if there is an objective comparison in terms of technical and health aspects between the different methods (Wi-Fi, powerline, Ethernet extension...), I would be happy to learn about it!
Rémi.-
Hi,
You will never find this kind of comparison, because it would be based on nothing; we are in the realm of unmeasurable effects, except for financial investment and technical performance, the effects on health, no one is capable of measuring them.
If the waves traumatize you that much, use an ethernet cable and we won't talk about it anymore.
Okay?
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Hello
Before investing, I would like to gather information.
I want to print from a computer in a room to a printer connected to a computer in the office. Both computers are running XP with Ethernet ports, and the printer is an HP with an Ethernet port.
Is it enough to just plug it in or are there settings that need to be configured?
Thanks for as many details as possible.-
Hello
As stated, you are not talking about an internet router...
Normally:
A powerline connector type 85 Mbits on the first PC ethernet
A powerline connector 85 on the second
PC == dlan 85 --------------- 220 V ------------------------- dlan 85 ===PC and USB printer
Already there, the 2 PCs can see each other and share the printer
If there is an ethernet router, just add an adapter to an RJ45 ethernet port
Router == dlan 85
PC === dlan 85
PC2/printer === dlan 85
Here, the 2 PCs can see each other and access the internet as they are on the same network as the router.
Moreover, it is often necessary to obtain an IP address from the router (via DHCP when you don't have a fixed IP address)
Note that there are also powerline/WiFi units now, which allow you to set up WiFi in normally inaccessible places: basement, attic, swimming pool distant from the house, etc.
Best regards,
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Hello everyone
I would like to connect a color HP laser network printer to a powerline adapter and another powerline adapter to a PC or to the livebox.
Is this possible?? If I remember correctly, I think you need to install software on the PCs, so how do you do it on the printer???
Thanks everyone...
Bye -
Following a verification at "LEA", which provides the 85M netplugs sold by Free, I would like to clarify that the 200M and 85M Powerline technologies cannot communicate with each other.
Since the freeplugs delivered as standard with Free are of the 200M type, installing 85M netplugs will generate a second parallel Powerline network to the 200M. This means you need to connect the Freebox to each of these two networks for everything to work and communicate...
Not long ago, Free was advertising on its website that you could buy additional netplugs to connect other devices (computer, printer...) remotely via Powerline. Be aware that a pack of 2 85M netplugs will only allow you to connect one additional device (however, you can get 2 more for a total of 3 additional devices).
Lastly, Free's technical support strongly advises against connecting 2 Powerline systems to the Freebox... I then asked how to connect computers remotely: the Wifi will be suggested to you! In summary, if you strictly follow Free's instructions, purchasing a Freebox equipped with a 200M freeplug prohibits you from using Powerline for your other connections... Something to think about.-
and ...
by adding some freeplug 200M, it should be possible, right?
to create a single 200M powerline network with more than 2 connections.
they just need to sell freeplug 200M separately.
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and ... there you go! -
Sure, it's possible!
But since all devices must have the same codes, operators generally don't know how to add a third or fourth device... They are responsible for the Router / Set Top Box connection, so adding other elements can potentially cause problems as it weakens the bandwidth.
In practice, an IP TV stream takes about (depending on the Mpeg4/Mpeg 2 formats from 500 Kbps to 12 Mbps)
since the 200AV does 200, in practice 200/3 = 70 Mbps TCP, and 90 Mbps in UDP.
So even weakened, the 200AV signal easily provides 2 streams of 10 Mbps on 2 different TVs with 2 different channels... the technology is designed to provide 2 HD TV streams in the house simultaneously...
So, 4, 5, and even 8 boxes don't pose a problem (I have 12 at home with video surveillance, 1 set top box, 1 NAS, 1 network printer, 3 PCs) In short, no problem
85 and 200AV: I confirm that the two coexist without communicating. If they are connected via a switch or an Ethernet cable, they will communicate. But avoid connecting them very close to each other, as they will interfere with each other's carriers, the famous 2-28 MHz used by HomePlug1 and 200AV... so try to connect them as far apart as possible from each other. -
"They're going to eat the carriers"
I believe that if they shine too much on each other, we risk especially intermodulation, which will cause total interference in densely populated areas.
As mentioned earlier, we must not forget that PLC is radio... on wires.
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And... There you go! -
Hello
Based on all the previous messages, I don't understand if the couplings are just the powerline adapter/Freebox + one PLC and that's it, or if we can install 3 additional adapters besides the one connected to the Freebox -
I bought 4 Free NetPlug 85MBps powerline adapters, intending to replace the Wi-Fi with powerline.
We have 2 PCs, 1 printer, and therefore, we would need at least 3 or even 4 powerline sockets.
When I plugged in the first "host" adapter, there were no issues, it works (even though it's a power strip but if I understood correctly, that reduces the speed). However, the 3rd one does not work and has slowed everything down (which makes sense since, based on the information here, the bandwidth is divided by the number of adapters).
So for my setup, do I need to connect 2 adapters to the Freebox or just return them and stick with Wi-Fi (since powerline seems just as harmful and even more of a hassle)!
Thank you
Eole -
In your case:
1 powerline adapter on the router (injector) is enough with the password "TiTI"
3 other powerline adapters for your 2 PCs and Printer, all coded Titi
But honestly, the power strip is an absurdity, especially with 85 which is limited (max real 25 Mbits/s when 2 outlets are close)
So buy a wall-mounted power strip at Catso or Mr. Brico (maximum 3 euros)
You will connect your powerline adapter on the left and your power strip on the right and you will gain performance.
It is essential that all 4 outlets have the same password.....
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Thank you for the details.
For a simultaneous connection of 85M + 200M, how can I separate the two powerline adapters while they are plugged into the Freebox? I only have one power strip for both...
I do like the idea of using a single 200M powerline network, but to my knowledge, Free doesn't sell one yet.
Moreover, I very much doubt that Free will acknowledge their misinformation and agree to take back my two 85M netplugs that work perfectly (with each other). Curiously, I no longer see the advertisement encouraging the purchase of 85M netplugs as a complement to the 200M!-
So it's not necessarily possible... you need 2 distinct electrical outlets, one on the right and one on the left, which we will connect to with an Ethernet cable, 2m or 3m away. Not exactly aesthetic, but effective
The important thing is to avoid placing them in the same spots so they don’t "eat" each other.
Avoid the power strip. (loss between 10% and 30% on a regular power strip, and up to 90% on a surge-protected outlet). Unless it is designed for powerline communication like the latest MGE outlets with 85 or 200 included. (devolo inside)
Advantage: no signal loss, and filtering of "electrical noise," which generally results in a gain of +15 to 30%, which is huge
(filters noise from the router, halogen lights, phone, .. and so on...)
Sometimes it is possible to create more clever configurations when facing issues with outlets and bandwidth
Keep the Router on 200 ------------- 200 ----------------- and on another 200 connect a switch that branches out to 85 at a location where you can find 2 distinct outlets...
measure the speeds between outlets using the utility usually provided with the powerline adapters...
It's not easy to determine in advance what the best options will be.
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Fascinating discussion...
And you still have the solution to get high-speed internet over TV coaxial cable... (in a house)
When you have a basement and 2 or 3 floors or 3/4 outlets that are scattered, you can use them as high-speed cables to transmit IP... the coding like PLC will take place on the 2-28 MHz ranges, which means where nothing is happening, and you can continue to use your satellite or DTT TV as before.
These frequencies are the ones used in hotels for pay television, minibars... room services, but in analog...
Advantage: we are not dependent on a star switch like 100BT Ethernet, and coaxial wall outlets exist in most cases. Likewise... we can go up to 1000 meters... whereas Ethernet is limited to 90 m, then to cascades of switches/.-
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coding like PLC will be done on the 2-28 MHz ranges, that is to say where nothing happens,
there is always something happening somewhere in radio.
these frequencies are used for long-distance communications, amateur radio, certainly with coaxial you interfere much less with neighbors than with PLC, but all frequency bands are used: http://www.anfr.fr/pages/tnrbf/tableau_derive_150105.html#HF
up to 1000 meters... at what speed?
what is the price of transmission equipment (modems)?
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and... Voila Voilou Voila! -
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300 meters in analog RJ45 with repeaters but no more.
in POE ....let's forget that too
and it's not the same price either, much more expensive for the hack above 100 meters.
I'm talking about 700 meters with a normal shielded RJ45 cable at 1 euro per meter ..and it gives you 50 Mbits at the end...
In coaxial it gives you 100 Mbits UDP real (in IP video) at the end and 80 Mbits TCP real.
Ideal for video surveillance and much cheaper than fiber of course and more bandwidth than VDSL.
Price: 150 euros excluding VAT for the box and for a bridge it necessarily makes 2. (one master, one slave)
in coaxial one master and one slave
300 euros for 100 Mbits at 1500 meters in coaxial...who can beat that? -
Can go up to 300m depending on certain conditions!
Google is your friend and now Wikipedia too
either you provide them or you don't (which is the case)
of course, you can reach 1 mile with long reach ethernet, but not at the same speed: https://en.wikipedia.org/wiki/Long_Reach_Ethernet and not at the same price, you need the right switches at the ends, they don’t give them away.
besides, these are more modems than switches.
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and ... There you go!
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Yes, we agree that there is never any void, but since the PLC doesn't radiate strongly, the CB radio users aren't too bothered. Moreover, PLC over coax avoids certain amateur frequencies (manufacturers reduce emissions by 30 dB on certain frequencies, which leaves them completely undisturbed).
In fact, we can go up to 1500 meters; I've tested it with hybrid coax PLC boxes from German manufacturers (;-) and if we don't have coax, we can even use the telephone copper pair (and here, we don't go as far, from 200 to 700 meters depending on the quality of the copper and shielding).
It costs around 150 euros excluding tax for the modem, and you need 2 for point-to-point, but you can set up master/multiple slaves with VLAN isolation for hotels, hospitals, university restaurants, etc.) with speeds of up to 20 Mbps per user (HD IPTV).
In short, we are reusing existing infrastructure... and it's very convenient. -
Hello, PLC is super convenient and has replaced Wi-Fi at my place, which gave me headaches (like my mobile phone :-( but we only talk about the positive sides (like with all new technologies) but I'm looking for the negative side and even "destructive" if it exists.
What is the risk and the radiation level of PLC because with PLC all the electrical circuit transforms into an antenna???
What is the myth and where is the reality (often hidden from us for commercial profit)?-
Arf,
Powerline communication generates radio waves that are more intense than Wi-Fi: lower frequencies, but still radio waves.
https://www.reseaux-telecoms.net/actualites/lire-let-x92-idate-jette-un-voile-pudique-sur-la-set-xe9-curitet-xe9-des-cpl-10488.html
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and ... There you go! -
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in terms of the human body, I would be tempted to say ... neither one nor the other.
but WiFi operates with higher frequencies that carry more energy, however, the electromagnetic pollution from powerline communication (PLC) is much more bothersome (not specifically for the body)
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and ... There you go! -
Hello
Power is indeed crucial, as well as frequency.
Powerline communication (PLC) operates in the 2-28 MHz range and cannot boil the cells.
The power of PLC adapters is around 5 kW max in operation and 2 or 3 kW in eco mode.
We are very far from the emission powers of phones and Wi-Fi which, by definition, aim to broadcast everywhere.
PLC generates a slight field around the electrical sheath, which explains why amateur radio frequencies are disabled to avoid disturbances.
But the power is negligible!
The University of Bordeaux hosts a presentation that discusses PLC power and radiation.
https://ent2d.ac-bordeaux.fr/disciplines/systemesnumeriquesenlp/#cpl
See you! -
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Hello everyone,
I apologize for the late response.
I have two small questions about CPL.
1) Can I transmit data over a DC power supply?
2) My data is in baseband (bipolar NRZ). Can I transmit this data over the power supply, or do I need to modulate it into PSK, FSK, OFDM, etc.?
Thank you in advance for any guidance.
Elfstat-
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Hi brupala,
Thank you for your quick response.
I was well aware that my question was a bit out of the blue, but since I came across one of the only posts where people have a decent understanding.
So for my problem, I need to build my own MODEM.
However, does transmitting data AND a continuous power supply (together) not pose a problem?
As for your question: "over what distance do you need to transmit this data?"
This transmission will take place over several hundred meters (ideally 1 to several kilometers to avoid repeaters).
Thank you very much for your help. And sorry again for my off-topic question ;)
Best regards,
Elfstat -
Hello
The PLC technology can module and demodule independently of the power supply (thousands of carriers)
It can operate on 220V AC or DC, or on a fully undulated network... and even on a non-powered cable like a telephone or coaxial cable.
Over coaxial, information can be transmitted even if the coaxial is powered with 48 VDC to power a video amplifier for example, but it works without anything as well.
So I think it should work, provided that 230V is supplied for the PLC units
With I3E (early 2010), we're talking about near-future products (end of 2010) of 500 Mbps on 220V (probably 100 Mbps real over short distances) and 1 Gigabit over coaxial (probably 300 Mbps real) by exploiting all possible frequencies, as long as there is no more analog television. -
The fact that it is a continuous power supply is not a problem in itself.
The huge capacity (in the sense of a capacitor) of continuous power supplies short-circuits high frequencies, but by injecting via adequate filtering, it is possible to preserve both by inserting the modem in cut-off on the power supply (injector) side of the cable.
The technique to be used is actually closer to ADSL, which transmits over several kilometers on 48V powered lines, than to PLC, but the two techniques ADSL and PLC are not very different.
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and ... Here you go! -
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Hello
when will the ban on this heresy that is powerline communications (PLC) be enacted !!!!!
With this nonsense, the entire radio spectrum from 3 to 30 MHz is being polluted, except for the amateur radio bands, which are just a tiny part of the 3-30 MHz spectrum. What about broadcast radios, CB bands, or others?
There's a lot of talk about pollution right now, and here’s an example of it.
I’ve been listening to radio for 20 years, and today it’s becoming nearly impossible because of this crap. I’ve never disturbed anyone, and now I find myself with two PLC users in my neighborhood: and just like that, goodbye radio.
If a neighbor prevented you from having TV or internet, you would be red with anger: the same goes for shortwave users.
It’s not complicated to run a little cable and put an RJ45 socket at each end, and on top of that, it’s much more efficient and doesn’t disturb the entire neighborhood.
So respect others; you have other technical options to transmit data than PLC..
We, users of radio waves, have no other means than the waves to do radio.
I am in favor of a total ban on the use of these devices that should never have been put on the market.
Thank you for reading
jl-
Hello, I totally agree, it's a real pollution of the shortwaves.
I'm a CB radio operator and shortwave listener, and I wanted to get my license to be a Ham Radio operator, but if I can no longer use the shortwaves, what's the point!
One (or maybe several) neighbors are using Powerline Communication (PLC) and I can easily tell what time they are active. I walked around with a portable receiver and in front of a house I picked up a strong signal (50 meters from my home). When will the ban on these devices come?
By the way, if PLC were on the FM band, it would have been banned a long time ago!!! But for long-distance communication, nothing beats shortwaves.
Fabrice, CB operator and radio listener in the 44. -
prohibit PLC?
for a few amateur radio operators?
are you kidding or are you high up in the clouds? :-)
Today, when you want to be an amateur radio operator, it's like for amateur astronomers, you have to get away from radio pollution for the former and light pollution for the latter.
In both cases, the solution is far from the cities.
you also need to avoid being near high-voltage power lines for amateur radio operators, they are filled with radiations of all colors. -
no, I'm not dreaming
the electrical network is designed to carry 50Hz and nothing else.
aside from that, short waves are not only used by amateur radio operators:
broadcasting, military, meteorological services, maritime navigation, aviation.....
data is transmitted over a dedicated cable (twisted pair, coaxial...)
finally, you need a license to transmit on short waves, and the powerline communications associated with EDF lines act like a transmitter and its low-power antenna, but it doesn't stay confined inside your house. range between 200m and 1km.
yes, I'm saying it again. proceed to ban it. running a cable is more reliable, it doesn't consume power and you won't flood the entire neighborhood. finally, if it turns out that you cause interference and someone complains to the ANFR, the fine will be on you. QED -
Alas, you are right, but radio pollution is everywhere: try listening to the AM longwave radio today: you shouldn't get too close to high voltage lines.
But technology is evolving and could eventually satisfy everyone. -
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Hello,
I would like some explanations or solutions to my question.
I am in a house with 2 electrical panels and 2 EDF meters. (I know it may seem surprising....) lol
My question is as follows:
How can I ensure that the powerline networking (CPL) works on both electrical networks and therefore powers the entire house?
Thank you for your responses and help.
Mathieu-
Hi,
thank you for asking your question in a new discussion, it is a bit off-topic in this one.
Otherwise,
we connect the two isolated powerline networks with an Ethernet cable and that's it.
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Hello,
Thank you for this very useful information.
I have a problem, I recently connected my laptop to a powerline adapter.
I haven't connected the second powerline adapter yet, but I'm already recognized by a router that isn't mine. It's my neighbor's.
It’s through this connection that I’m writing you this message.
My WIFI is disabled and when I unplug my powerline cable I have no network.
I read earlier that such a connection was "impossible."
Does anyone have an explanation?
How can one secure a connection through powerline?
Thank you in advance.
Best regards.-
https://forums.commentcamarche.net/forum/affich-2745815-courant-porteur-cpl-mythes-et-realites#59
new question >> new discussion. -
You just turned your home into a shortwave transmitter, and all your neighbors within several hundred meters can receive your signals. If there's a guy among them who is skilled in computer science, a hacker, he will have no problem finding out everything about you and your habits on the internet. Nice, huh???
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Hello,
Silly question:
I have 3 Free powerline adapters (1 purchased additionally for the second PC in the living room), and all three work very well together.
Now, I’ve been told that electricity meters do not block the powerline signal, and so if my neighbor, who is on the same power line and probably less than 300m from my house, also has a Free plug, it means he could connect to my network.
As for the WEP/WPA key, I would like to know how to set a security key on a wired network.
Best regards. -
What do you think about this?
http://www.greenit.fr/article/materiel/reseau/cpl-attentions-aux-ondes
