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  • ksen
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Callout: computer nerds
Why is a wifi signal limited to about 50Mbps?  Or is it and I've just been sold a bill of goods?

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Re: Callout: computer nerds
Reply #1
The answer seems  inconclusive. 

https://discussions.apple.com/thread/2611227?tstart=0

The actual bitrate is a function of frequency and code packing, so I don't know what the theoretical upper limit is, but the practical upper limit seems to be around 20-40 Mbps on current hardware.

  • ffejrxx
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Re: Callout: computer nerds
Reply #2

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Re: Callout: computer nerds
Reply #3
https://en.wikipedia.org/wiki/List_of_WLAN_channels

The basic issue is that the radio spectrum is a limited resource.  The more data you put on your carrier the wider the signal becomes and you're not allowed to stray outside the band you're broadcasting on.  Sufficiently complex equipment may broadcast on multiple bands at the same time but usually that's something the expensive routers do, not what the machines do.

(This is related to why it took New Horizons more than a year to broadcast everything from the Pluto flyby.  For NASA the bandwidth limit is a function of noise--the narrower the band the less noise and thus the fainter signal they can hear.  This limits New Horizons to the sort of speed we saw with dialup in the 80s.)

  • ksen
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Re: Callout: computer nerds
Reply #4
Thanks guys.

Comcast recently bought out my old cable/ISP company Bright House.  They have a 300Mbps package I bought but they also discontinued Bright House's home networking package that allowed you to put an ethernet connection in other rooms for a direct connection.  So unless I want to run cables from my living room to the other rooms I have to rely on the wireless connection which tops out around 40Mbps.

Comcast customer service was no help whatsoever.  I asked her if I have a 300Mbps internet package but can only access the internet from other rooms using wireless why should I pay for the 300Mbps connection when I'm only able to effectively connect at 40Mbps?

Ugh, I knew Comcast would be a nightmare when their merger was approved.

  • ffejrxx
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Re: Callout: computer nerds
Reply #5
Thanks guys.

Comcast recently bought out my old cable/ISP company Bright House.  They have a 300Mbps package I bought but they also discontinued Bright House's home networking package that allowed you to put an ethernet connection in other rooms for a direct connection.  So unless I want to run cables from my living room to the other rooms I have to rely on the wireless connection which tops out around 40Mbps.

Comcast customer service was no help whatsoever.  I asked her if I have a 300Mbps internet package but can only access the internet from other rooms using wireless why should I pay for the 300Mbps connection when I'm only able to effectively connect at 40Mbps?

Ugh, I knew Comcast would be a nightmare when their merger was approved.

im sorry

see if they offer a lower speed package

or run some wires, its not as hard as it seems
wired is always faster than wireless
gigabit lan stuff is cheap, and you can get 100ft of cat5e for under $20
a good crimper is about $30
box of ends and hoods are about $10
cable tester $5-10
rj45 keystone wall plates are about $5 ea and look nice when done

if you have drop ceiling in basement or can squeese the wire under wall trim can make running the cable easier than it looks
it may be a day of moving furniture around, but great for wired pcs not near the router/modem

  • ksen
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Re: Callout: computer nerds
Reply #6
Yeah, I'm just going to run the wires and hide them best I can.

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Re: Callout: computer nerds
Reply #7

  • MikeB
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Re: Callout: computer nerds
Reply #8
Ouch, $6 per foot!

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Re: Callout: computer nerds
Reply #9
There are cheaper, less architectural looking conduits available.  I like that quarter round looks like part of the fancy baseboard.

  • SkepticTank
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Re: Callout: computer nerds
Reply #10
Yeah, I'm just going to run the wires and hide them best I can.

Buy the crimper tool, terminators and a spool of cable like ffejrxx says.  If you try to buy pre-made wires it'll cost you a fortune.

  • ffejrxx
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Re: Callout: computer nerds
Reply #11
crimping isnt as hard as it looks
if its a short cable, under 10ft, colors dont make any diff as long as both ends are the same
over 10ft usb code 'b'
http://www.incentre.net/wp-content/uploads/2015/02/ethcable568b.gif

when i do cables, i trim the insulation off about 3in of wire (put on a hood if you have one)
seperate the pairs, line them up near the end of the insulation
trim at about 1/2in from the insulation end (make sure all wires are cut the same length)
cram into the connector (double check the colors and make sure they go all the way to the end of the connector)
then crimp

https://www.youtube.com/watch?v=ORZYBASS9zw

i hate the cat6/a connectors with the extra plastic dividers
http://www.vpi.us/images/6a-plg-stranded.jpg
 i just use cat5e ends on 6 and have had no issues
  • Last Edit: February 21, 2017, 06:59:00 PM by ffejrxx

  • SkepticTank
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Re: Callout: computer nerds
Reply #12
Yeah, with a little practice it's not difficult at all.  Unfortunately, I only end up doing it every 5-10 years so I have to re-train myself all over again.

  • MikeS
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Re: Callout: computer nerds
Reply #13
  • Last Edit: February 22, 2017, 04:23:05 AM by MikeS

  • SkepticTank
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Re: Callout: computer nerds
Reply #14
That definitely makes the task more difficult.

  • ksen
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Re: Callout: computer nerds
Reply #15
Nope, not color blind.

  • SkepticTank
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Re: Callout: computer nerds
Reply #16
If you already had the "home networking package" don't you already have cable run to the other rooms?  Or was it coax with a cable modem in each room previously?


  • ksen
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Re: Callout: computer nerds
Reply #17
It was like a tiny box that hooked into the coax and boosted the wifi range but also had ethernet ports in the back for hooking up with a wire.

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Re: Callout: computer nerds
Reply #18
Why is a wifi signal limited to about 50Mbps?  Or is it and I've just been sold a bill of goods?

There is a difference between theoretical speeds and actual speeds.
Your devices can only use the highest speed they are compatible with.
 

Quote
Below is a breakdown of the various 802.11 WiFi standards and their corresponding maximum speeds. Theoretical wireless speeds (combined upstream and downstream) are as follows:
802.11b - 11 Mbps (2.4GHz)
802.11a - 54 Mbps (5 GHz)
802.11g - 54 Mbps (2.4GHz)
802.11n - 600 Mbps (2.4GHz and 5 GHz) - 150Mbps typical for network adapters, 300Mbps, 450Mbps, and 600Mbps speeds when bonding channels with some routers
802.11ac - 1300+Mbps (5 GHz) - newer standard that uses wider channels, QAM and spatial streams for higher throughput

Quote
Below is a breakdown of actual real-life average speeds you can expect from wireless routers within a reasonable distance, with low interference and small number of simultaneous clients:
802.11b - 2-3 Mbps downstream, up to 5-6 Mbps with some vendor-specific extensions.
802.11g - ~20 Mbps downstream
802.11n - 40-50 Mbps typical, varying greatly depending on configuration, whether it is mixed or N-only network, the number of bonded channels, etc. Specifying a channel, and using 40MHz channels can help achieve 70-80Mbps with some newer routers. Up to 100 Mbps achievable with more expensive commercial equipment with 8x8 arrays, gigabit ports, etc.
802.11ac - 70-100+ Mbps typical, higher speeds (200+ Mbps) possible over short distances without many obstacles, with newer generation 802.11ac routers, and client adapters capable of multiple streams.

Link

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Re: Callout: computer nerds
Reply #19
Thanks guys.

Comcast recently bought out my old cable/ISP company Bright House.  They have a 300Mbps package I bought but they also discontinued Bright House's home networking package that allowed you to put an ethernet connection in other rooms for a direct connection.  So unless I want to run cables from my living room to the other rooms I have to rely on the wireless connection which tops out around 40Mbps.

Comcast customer service was no help whatsoever.  I asked her if I have a 300Mbps internet package but can only access the internet from other rooms using wireless why should I pay for the 300Mbps connection when I'm only able to effectively connect at 40Mbps?

Ugh, I knew Comcast would be a nightmare when their merger was approved.

Are you sure you the 300Mbps internet package refers to your internet connection speed?  Because it might mean they are giving you a 300Mbps wireless-n router which is a lot faster than the older wireless g routers.

Spoiler (click to show/hide)
 

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Re: Callout: computer nerds
Reply #20
It was like a tiny box that hooked into the coax and boosted the wifi range but also had ethernet ports in the back for hooking up with a wire.

Sounds like this:
https://www.amazon.com/TRENDnet-Powerline-Ethernet-Adapter-TPL-401E2K/dp/B004D9V8C8

ETA:
Quote
The 500Mbps Powerline AV Adapter Kit, model TPL-401E2K, uses any electrical outlet to create a secure building-wide high speed network. Connect one of the included adapters to your network, and plug the other in to any outlet on your electrical system for instant high speed network access. Connect the included adapters quickly using the convenient one-touch Sync button. Use up to 16* adapters to network devices in different rooms without running new cabling. A Gigabit Ethernet port on each adapter maintains high performance wired connections. Manage the Powerline adapters with the included Windows utility. LED displays convey device status for easy troubleshooting. Advanced 128-bit AES encryption secures your network. The included adapters are ideal for use in buildings that interfere with wireless networking signals.

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Re: Callout: computer nerds
Reply #21
That definitely makes the task more difficult.

Even with impaired color vision it's a problem.  For most day-to-day activities I see color fine.  Crimping wires, though--forget it.  I tried it long ago--and couldn't decide what went where.

  • ffejrxx
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Re: Callout: computer nerds
Reply #22
powerline adapters suck
they work good enough if they are on the same circuit breaker, but across breakers or on the other side of the 220v rail performance drops dramatically

if you can run the wire, and find a local computer shop, ask a tec if he would be willing to terminate a few ends for a couple bucks

  • el jefe
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Re: Callout: computer nerds
Reply #23
Yeah, with a little practice it's not difficult at all.  Unfortunately, I only end up doing it every 5-10 years so I have to re-train myself all over again.
same here

  • el jefe
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Re: Callout: computer nerds
Reply #24
Nope, not color blind.
one of my friends didn't realize he was colorblind until he was in his twenties.  he had always wondered why the DC metro had two brown lines.