5 Powerline Networking Devices Reviewed 153
An anonymous reader writes "Most people who can't or won't hardwire for broadband have an obvious alternative: Wi-Fi. Unfortunately, there can be architectural anomalies between floors or even between rooms that can interfere with Wi-Fi signals, resulting in spotty, or even dead, signals. So what do you do? Well, you can try using a powerline device. Computerworld reviewer Bill O'Brien tests powerline units from Belkin, D-Link, Linksys, Netgear and Zyxel, and compares their performance to that of his wired and wireless setups."
I remember these... (Score:4, Informative)
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I hate WiFi, I find it unreliable and worry about security.
I'd like to hear about the reliability and security of these devices. I'd be worried that my neighbours would be able to listen in over their power lines.
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I use some Netgear adapters at home. They've been rock solid for almost two years, after abandoning wireless for these due to my neighbors flooding the airwaves. The ones I have will encrypt the signal. Since they're older units, I believe they do DES, possibly TripleDES. The newer units are claiming to do 128-bit AES.
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http://en.wikipedia.org/wiki/Warflying [wikipedia.org]
Too late!
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According to the article, they are still much slower than Wi-Fi.
They used 802.11n. The results are more competitive with b/g. (It might be tempting if you don't want to run cable but want the security)
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Dual band 802.11n, not 2.4Ghz 11n, of course it was faster.
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Damn...I'm renting and running cat5 won't be easy.....
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I once ran cat5 in a rented apartment to connect my MythTV box to my network. I had an upstairs unit with attic access in the hallway and I just ran the cable into the wall through the hole behind a phone jack (just loosened up the wallplate), up into the attic, and then down and out the hole where the cable jack was near the TV. Just pulled it all out when I left. Nobody ever noticed.
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I'm not renting, but I live in a house with mixed adobe, pentile (hollow ceramic block), and frame construction, some of it on a crawlspace and some on slab. So running Cat5 throughout is basically impossible. Unfortunately, the adobe tends to block WiFi signals. My solution, which covers *most* of the house, is an Airport Extreme with multiple Airport Express units using WDS to repeat the signal. It works pretty well *most* of the time.
Powerline would probably be a good solution, but if it's slower than Wi
Only metric is time to transfer 8.05 GB? (Score:4, Insightful)
What about packet loss, ping, ping jitter and resistance to interference?
Bulk transfer is useful, but may not be important to gamers or people who want responsive.
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Just make sure that a 240V device, like an oven or dryer, is on when you want to use the network.
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I have both and can use these without problems,
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Just stick a 1 ohm 240W resistor between phases
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Damn - make that 57600W.
(Getting late)
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...and watch your power meter spin like a frisbee. Assuming that you don't just trip your main breaker first (200A service (what I have for a 2-bedroom condo with all-electric appliances) only delivers 48 kW).
There may be a higher-value resistor you could place across the two legs of split-phase 240V service that would bridge a powerline-netwoking signal while not burning obscene amounts of power. Then again, if you could break out a 240V circuit somewhere (behind the dryer, maybe?
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Guess they can't use the ground wiring for some reason?
Nope, because it's ground and is therefore tied to either your household plumbing or a large copper stake driven into the ground. You can't pick any signal off of it because of course anything attempting to transmit on it will simply be swallowed up.
Re:Only metric is time to transfer 8.05 GB? (Score:5, Informative)
Since the "ground", the third wire, the bare or green wire, properly known as the "grounding" conductor, is, at radio frequencies, somewhat separated from the "neutral", the white wire, properly known in a 120 Volt circuit as the "grounded" wire (it and the "grounding" wire are tied together at the meter base only)(it's only the "neutral" in a 240 volt circuit where you have 2 "hot" wires 240 volts apart and each 120 volts away from the neutral), you should be able to insert a radio frequency signal between the "ground" and the "neutral" and have the "neutral" act as antenna, which would solve the "are you on the same leg or not" problem, since the "neutral" is common to both 120 Volt sides.
Don't know how Underwriters Lab and the National Electrical Code folks would feel about it, though, or whether it might "confuse" Ground Fault Circuit Interrupters.
Anyway, I hope it works better than those NICs that used (or tried to) the telephone wiring--Home Phone Network Alliance, or something like that.
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Guess they can't use the ground wiring for some reason?
I'm not an EE but I don't think a grounded medium will transfer electromagnetic waves. Even a "grounded antenna" isn't directly grounded, but has a ground wire running near it, but with an insulator separating them.
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Re:Only metric is time to transfer 8.05 GB? (Score:5, Informative)
I have a Linksys PLK200 set connecting my living room to my basement router and over that I:
Stream HD movies from Netflix
Stream tons of other content from my media server
Play online games over Xbox Live
Surf the internets
All without a problem. But then again I also use a wireless mouse and an LCD monitor to play first person shooters...
I've also noticed no problems due to microwaves or the dishwasher.
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Definitely important parameters. For what it's worth, I have a pair of 85Mbit Devolo plugs (a popular brand in the UK at least) that the diagnostics state are giving me a 51Mbit link. The plugs link my downstairs office area to the ADSL router and server upstairs.
As well as a PC and network print server, I have a Snom 360 VoIP phone on the desk, with accounts registered on the upstairs server and also at Head Office. I've had no no problems with the phone using both the the G.729 and uLaw CODECs, implying
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Similar experience here - I have the 200MBit Devolo plugs in the UK. It's a 10y/o house (so modern circuit breakers etc which no doubt help).
Powerline has provided a far more reliable connection for me than wireless, and I can happily transfer HD video to my media box, and access the internet simultaneously on it (which is basically all it needs to do).
Setup-wise, I'd definitely recommend them to non-tech-savvy friends too - no messing with settings, literal plug and play.
Obviously UK and US electrical syst
and security? (Score:3, Interesting)
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Re:Only metric is time to transfer 8.05 GB? (Score:5, Insightful)
>What about packet loss, ping, ping jitter and resistance to interference?
Heck, how about reporting in standard units? Time it takes to transfer his porn collection in a zip archive, i mean 8.05gigs of data? What the heck is that? How about just running iperf and reporting standard mbps.
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And talking about adding video streams, how were they being streamed, what bitrate were they etc?
For that matter, what protocol was used for the file transfer, different protocols are suited to different network conditions so obviously you need to test multiple methods of network transfer if you're testing physical networking devices.
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I have a pair of trendnet TPL-202E's [newegg.com], and they run flawless. Never wavering connections, or anything. I've hit above 1MB/s in transfers on comcast which is pretty decent.
No matter what is added, they run constant. In addition I tested the maximum throughput (since I run them on an extension cable) with a heater on the other side of the extension cable and it didn't affect speed at all. I have not bothered with the encryption but I could, I guess.
For me for gaming it is dead on perfect, no problems of pack
Viable, but for whom? (Score:1)
Wow... (Score:5, Funny)
Re:Wow... (Score:5, Funny)
Sounds like my ex.
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nah, she wasn't all that expensive.
Well, you weren't the one who divorced her :)
Heat (Score:4, Informative)
Re:Heat (Score:4, Informative)
I have a pair of cheap Airlink adapters from Frys that have been running well for several months now, despite them both being enclosed in areas with poor airflow. I use them to connect the Xbox (running XBMC) in my bedroom with my router in the living room.
The connection is fast enough to play back downloaded videos with zero issues. I tried some tests using computers at opposite ends of the house and was able to get around 3 or 4 MB/s transfer between them. My 802.11n wireless network usually peaks at around 6-8 MB/s, so while it is slower, it's not noticable for most tasks and still enough to max out my FIOS connection.
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They hit the biggest problem... (Score:2)
Which, I if remember my breaker right, the breaker divides the t
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Just re-read it and yeah, it didn't make sense. Good thing I don't make a living as an electrician. Though if I did, I suppose I'd know already....
Seriously? (Score:5, Insightful)
What kind of small office wouldn't be able to run a piece of CAT5? If you can't afford to do that (and I'm including the done by hand up through the ceiling by the CEO method) then your company has bigger problems.
$20 of CAT5, $10 of jacks, and a $20 fish-tape isn't fiscally feasible, but these gizmos are?
These real world speeds are pretty bad. The D-Link didn't even finish the test. It looks like they came out at about 2.4 MBps. His WiFi was 4x faster. Ethernet was 10x faster.
Oh, yeah, that's a common test. Why is it you can't let the Ethernet cable hang through the hall again?
Wanna bet? I've seen new houses where it was dumb luck (and incredible fault tolerance) that let the phone jacks work. When you try to go from one end of a new house to the other, or across floors, I doubt this will be representative of anything.
So these things can't stream video under real world conditions. Excellent.
Nice to know the top speed, but obviously you'll never run into this case except in the same room. And if both boxes are in the same room... run the Ethernet cable hanging from the ceiling.
If you really want to these kind of gizmos for your little office, how well do they work with 3 computers? How about 5? What happens if your 2.4 MBps goes to 0.3 when you add the 3rd computer? He mentioned that at least one has some kind of security. How good is it? Does it compare with WPA2? What are the chances the next office over is close enough (though the power lines) they could be on my network?
Pull a wire. We fussed with WiFi for years, and it is often problematic. If you are in a house or office, pull the wire. It's no that hard (for the simple cases he is listing, like two rooms above one another). Get the land lord's permission if you don't own the place. It's not worth all the fussing you may end up having to do with WiFi (thanks to neighbor access points, cheap $30 APs, etc).
Re:Seriously? (Score:5, Informative)
What kind of small office wouldn't be able to run a piece of CAT5?
One in an historic ('listed' in the UK) building where any form of drilling through walls or fixing cables to the structure is not permitted - at least not without a craplaod of inspections and paperwork.
Like my parents' 18th Century cottage.
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Re:Seriously? (Score:5, Funny)
Right now you can think freely, but they're working on that.
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Yeah, I'm one of the guinea pBzzBzzzBzzzzzt*click*
I am not involved in any government mind control program.
Testing...
Testing...
Hey bob, it works!
Oh crap, better turn it off n*click*
*blink blink*
*post*
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If you have ductwork you can always fish plenum-rated cabling through the ducts.
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Right. We wanted to run an Ethernet cable from the basement up to a room on the 2nd floor. I poked around for quite a while with fish-tape and wasn't able to find a way to get the cable down easily without drilling more holes. So we ran it down through the air return duct. One end sneaks out the register cover, the other is pulled out of the heating ducts through a small hole (which was resealed with duct-tape) near the furnace and it runs over to the equipment.
You don't always have to make new holes. Ther
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"with nice, thick, stone walls"
These do not mix well with wireless signals of any sort.
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The interference generated across the circuit would be unmanageable and leave you with practically nil bandwidth.
I've tried it. You can only have TWO on each individual circuit or else it's nigh-useless, and for every device you have plugged into that circuit, your bandwidth drops. Dremel motortool? Don't even THINK about getting a signal on that line until you're done with the tool and unplugged it.
It would be far simpler to just run the ethernet.
1729 Vicarage in middle UK works just fine (Score:3, Interesting)
4 years living in a 1729 vicarage in the middle of the UK, rented, Grade 2* listed. One netgear ADSL/wifi box covered the house just fine, bounced its signals 'through' the 2 foot thick solid stone walls to different rooms, and for people who really wanted a cable, we just ran ethernet cable discretely round the edges of the hall, up the stair and into people's rooms. Lift the carpets gently and run the cable underneath and along the skirting boards.
Not sure what listing status your parents' house is, I don
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Get the land lord's permission if you don't own the place.
In some buildings, that's far easier said than done. Or did you mean "move out"?
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In modern office buildings, indeed, CAT5 or more is the best solution. Pity not everyone leaves in a modern building, and not every office is in a welldesigned building either.
At home, I'm getting ever shittier Wifi. Last time I tried it, my card saw 15+ networks (17th century building facing... another such building), and Wifi keeps hanging during transfers, I cannot even play a movie remotely without freezes. Too many networks, probably many interferences too. My walls a quite thin, made of some kind of r
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You missed:
" ... if you had an electrician run two outlets from your breaker box, ... "
If you could afford to pay an electrician to install outlets into the rooms, you can afford to pay to have network cable installed.
Also, I concur with your comment about the extension cord.
I have only two uses for wifi right now:
1. iphone (no wired option)
2. between two buildings 800 feet apart with no right-of-way to run any sort of cable.
I can't imagine any situation where I would want to run networking over the powerli
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Pull a wire. We fussed with WiFi for years, and it is often problematic. If you are in a house or office, pull the wire. It's no that hard (for the simple cases he is listing, like two rooms above one another). Get the land lord's permission if you don't own the place. It's not worth all the fussing you may end up having to do with WiFi (thanks to neighbor access points, cheap $30 APs, etc).
I'd love to wire up my apartment, but I really don't see how it would even be feasible. If you can give me a good solution, I'd love to hear it:
My apartment [photobucket.com]
Basically, I want cable running from the TV, where I have the cable modem set up, to both desks. I live on the second floor of three, so I don't think I can go through the floor or ceiling.
Is there a good solution?
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Plastic raceway.
http://cableorganizer.com/surface-raceways/latching.html [cableorganizer.com]
I use something similar to run speaker wire to my rear speakers. I have it run up the side and across the top of a doorframe to the corner of the room, then it goes up to the ceiling, and along the ceiling/wall edge to the speakers. It blends in fairly well.
You can also pull up the edge of your carpeting and stuff cable under it (along the walls works well, but I wouldn't do that across a hallway or doorway), or remove your baseboards
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Rather than breach the drywall, which, intact, helps slow the spread of fire from one room to the next (each 4' x 8' sheet has about 8 gallons of water in it), why not remove the baseboard and use a woodworking router to put a CAT5 sized groove in the backside of it?
If you aren't the owner of the property, please negotiate this with your landlord.
Re:Seriously? (Score:4, Insightful)
not everyone is a twenty-something DIY geek eager to cut into the sheetrock.
Why is it you can't let the Ethernet cable hang through the hall again?
because your wife said no way in hell.
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Why is it you can't let the Ethernet cable hang through the hall again?
because your wife said no way in hell.
Sounds like someone needs a new wife.
I wasn't eager to cut my sheetrock either (Score:2)
But when I had to do some sheetrock repairs, and add a cable outlet, I learned how easy it was to work with, repair, and finish.
If a guy like me can do it to his house, anyone can.
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$20 of CAT5, $10 of jacks, and a $20 fish-tape isn't fiscally feasible, but these gizmos are?
That fish tape doesn't work well in my granny unit where the walls are made of cinder block, and a rug to throw over the cables definitely costs more than $20. A rug is probably going to cost you at least $40. That's at $20 difference. $20 dollars! I can understand someone being willing to spend $50 on networking, but $70? Are you insane?!?!?! More seriously, these devices seem to have the speed of the modem, the reliability of wifi, and the cost of an expensive gigabit Ethernet. It's like someone ch
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$20 of CAT5, $10 of jacks, and a $20 fish-tape isn't fiscally feasible, but these gizmos are?
Not everybody lives in flimsy wooden boxes. I live in a large building with thick brick walls.
Does this mean... (Score:2)
if your power goes out, that your Internet connection goes with it?
Wait, no, even if the power goes out, you'd still lose your Internet connection.
Well, not precisely. Think about it. What if all your equipment is hooked up to a UPS? Then, as long as your cable, telephone, or whatnot, stays up, you'd stay up.
Good point. Good point.
I guess it's time to stop arguing with myself.
Re:Does this mean... (Score:4, Insightful)
Wont work. Any line conditioning will kill all communications.
Ugh (Score:3, Funny)
I think I'd just scotch-tape cat5 to the walls before trying to use the electrical wiring.
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That's probably the most expensive time consuming way of doing it. If you're going for the divorce you may as well spend the money on hookers.
Either way you get the divorce, but in the second case, who cares if the net works, you've got hookers.
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Either way you get the divorce, but in the second case, who cares if the net works, you've got herpes.
Fixed that for you.
Networking good, telephone bad (Score:4, Interesting)
I bought a set of 3 of these for my parent's house and they worked really well for what we needed them to do - namely, to hook up the TiVos to the home network (these were the newer TiVos that only support the TiVo branded WiFi adapter, unfortunately). As I don't live in their town and was only there for the weekend to help, this was the quickest thing Fry's could arrange.
It worked so well, that when I got home I was inspired to feed a phone line to our tv satellite receiver over a powerline box. That way, all 4 pair in the one cat5 run going to that spot could be used for Gigabit and the phone could go elsewhere. So I bought a set of the RCA phone line over power gizmos. The resulting phone line was so shitty-noisy that I wouldn't want to make a phone call over it myself, much less ask the DirecTV receiver to attempt it.
I wound up buying a set of RTX DualJacks to solve the problem. They use 2.4 GHz to move the phone line and work perfectly, but they're nearly impossible to find anymore. I had to get them used on eBay.
I'm a little annoyed that nobody has made a similar box to transport a phone line over Ethernet. Yes, there are VoIP solutions, but they're way too expensive and over-engineered for what I want. Just two boxes that talk to each other with raw Ethernet frames to move a phone line from here to there oughtn't to be too much to ask, but apparently is.
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Ethernet cable consists of 8 wires (4 of them unused, unless you use GB). A phone line needs 2 wires. With the right splitter, you can run 4 phone lines over a sin
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That's what we did in a house I rented for a while. We did a deal with the landlord where we paid for parts and he paid for labour and the conduits. We got a drum of cat-5 and had a network socket and a phone jack run into each room. In my current house, I put in Cat-5e to every room, but tend to just use the WiFi.
Even WiFi seems to be slowly going away. A few people I know have switched to using HSPDA providers for their Internet - if you use less than 10GB/month here it's cheaper than cable Interne
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Um, did you miss the part where I said I was running gigabit over that line?
I'm well aware that you can combine 100bt with two phone lines. Our master bedroom is wired that way, but that line doesn't require gigabit, so I can get away with piggybacking the phone lines.
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What do you mean? If any room requires bandwidth, it is the Master Bedroom, of course!
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Like the other fellow who replied to me, you failed to notice that I am running gigabit.
Honestly, can nobody on /. actually read?
The winner is obvious (Score:3, Funny)
From personal experience, I have to say the Belkin Powerline AV+ unit is by far the best of the bunch here. Rock solid performance all the way. Look no further!
Sincerely,
Mark Bayard [slashdot.org]
These things work...sometimes...if you're lucky (Score:4, Funny)
I tried using Netgear powerline devices to connect my outside security cameras to my router about a year ago. It kinda worked--as long as I didn't expect too much in the way of throughput—like streaming video instead of occasional JPEGs. I also had a couple of computers connected via Wi-Fi at the time, and was so (unreasonably) encouraged by this less than stellar success that I switched them over to powerline "warts" too. They worked pretty well.
Then I moved my router to another room, and I haven't gotten these things to work ever again. Apparently, if your house wiring is just so, the powerline warts are fine; if the wiring—or the wiring between the points you are trying to connect—is not what the warts want, you won't get a signal.
Somebody told me I should try one of those "bridges" that the X-10 people use to connect different parts of their home wiring so their X10 devices work, but messing with these things was giving me a worse chronic eyelid twitch than wireless. Luckily, I discovered that my youngest daughter has all the necessary qualifications for an excellent cable monkey—mainly, she's petite enough to worm her way through tight, dark spaces, and isn't afraid of spiders. So I just tied some CAT5 to her ankle and sent her into the attic. No more problems now, everything's connected. Wire is good.
Re:These things work...sometimes...if you're lucky (Score:5, Funny)
So I just tied some CAT5 to her ankle and sent her into the attic.
So err... you must let her out for sunlight every now and then right? Sounds good otherwise.
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Don't be silly—I got her back (slightly dusty), or I wouldn't have been able to make all my connections, eh? Hmm. Oh. The network printer...did I ever finish that? Oh my. Where's the flashlight. 'Scuse me.
In this economy (Score:2)
O'Reilly Wireless Hacks. Page 164, Hack #68 -- "Homebrew Power over Ethernet".
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I think you are confused. Power over Ethernet and Ethernet over power lines are not the same thing.
That said, it is possible to do this kind of thing yourself. I used to have a book of hardware projects for the BBC Micro that covered how to create a network that ran over the ring main. You probably can't get away with telling children to plug their electronics projects into the mains anymore...
Dlink DHP-301s.. They're great (Score:2)
I've got four of the DLink DHP-301 units running in my house and they're just terrific.
They're great for anyone unwilling (or unable) to tear up their walls to run CAT5. In my case, I'd have to go through three floors and I'm not exactly a do-it-yourselfer. These units were affordable enough (compared to losing a weekend and having to get help from a friend to run CAT5), and just plain work. I took a risk being an early adopter and I'd do it again if I had the choice.
I use them to connect my broadband conne
Comment on Speeds (Score:3, Interesting)
Someone else had posted comments about the speeds over these lines so I figured I'd offer my experiences.
For doing large file transfers, yes they are a little slow. However, in terms of just about anything else they're completely sufficient.
In my house we regularly have up to three clients playing movies off the file server without issue. (In addition to standard internet browsing and occasionally running bittorrent off a laptop..)
These work well for me (Score:2)
I have a pair of Netgear adapters because my ADSL modem is in my living room and the room I wanted to put my office in was at the other end of the house. Previously, I have drilled holes and run ethernet or bridged my wireless base stations and that worked OK but this time I just couldn't get a connection to hold up and I didn't want to mess with long wires. With network over mains I can now have two separate base stations running giving me much better coverage in the house. File transfers over the mains
What the HELL? (Score:2)
What kind of units is "minutes per 8 gigabyte"?
TrendNet TPL-202E2K (Score:2)
I would prefer to have genuine Ethernet strung in there, but I rent the place, and I'd have to cut holes in things to get the cables and outlets in place (I know; I crawled around under the house and looked). So until I get the impetus to actually follow through on that, we're living with these HomePlug AV things.
They're still u
Interference with Amateur Radio (Score:5, Informative)
!BPL (Score:2)
This is not Broadband Over Power Line(BPL). In BPL a public electricity utility company uses its cables to provide broadband. Since the cables are long (long as in 10s of kms) , and their modems pump in a lot of power, they interfere with HAM communications.
This article, FYI, talks about low power networking devices for short home cables (short as in 10s of meters).
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This is not Broadband Over Power Line(BPL)
The effect is very similar; attempting to utilise unshielded (i.e. no ground cable twisted, or ground wire wrap) cables to multiplex a high frequency carrier with square(ish) waves modulated on top..
There are problems all signalling systems face - indeed the evolution of Ethernet is almost a study in this; you have reflections, you have impulses losing shape as they travel, you have loss.
And, indeed, there are videos on the internet of Amateur Radio operators proving without a doubt that home power netw
Another vote for Powerline Networking (Score:2)
FWIW, I have 4 old D-LINK modules (Score:2)
And they work great. Tivo and PS3 on the TV, media server in the basement, webserver in the guest bedroom, and the bridge to the router in the office. You forget they're there because they are so reliable.
AirLink anyone? They work great. (Score:2)
I have a wireless LAN based on equipment supplied by Roadrunner. Works OK.
BUT! I have a lot of metal in my house. Between heating ducts and the steel trusses holding up the second floor wifi doesn't work well between floors and doesn't always work room to room.
I have 6 of the AirLink power line Ethernet boxes. I bought them on sale at Fry's for no more than $30 each. I didn't buy them all at once. I bought one pair and then bought another one and then another one over a period of several years
I have one beh