Cable Internet

[NutBucket]

What frequency(ies) does cable internet work at? Followup question to that is where do you find splitters that are of wide enough bandwith to carry "regular" spectrum and that required for the 'net?(Besides calling up the cable company you smart@sses out there)

 

[NikPreviousAcct]

Get a 1000MHz splitter and you'll be fine. Atleast, I think that's what I remember the tech telling me...

It was a while ago and I'm doped up and loopy on drugs.

Ignore what I'm saying.

Stop reading this.

STOPIT!

I don't know what frequencies they operate on, but I can tell you fairly useless stats like acceptable signal-to-noise ratio, downstream signal strength, upstream transmit power, etc.

Dunno if those'll help though.

nik

 

[NutBucket]

I've tried a 900Mhz and 1GHz and neither worked, or at least I know the 900Mhz didn't work. Maybe I haven't tried the 1Ghz yet, I don't remember. Its been a long day.

 

[weezergirl]

i tried the 1G and it didn't work for me.

 

[Lars]

A good quality splitter rated at 5 to 1000MHz should work fine (at least that is what I use).

edit: got the splitter at radioshack, price was somewhere between $5 and $10

 

[dakata24]

Originally posted by: Lars
A good quality splitter rated at 5 to 1000MHz should work fine (at least that is what I use).

edit: got the splitter at radioshack, price was somewhere between $5 and $10

got mine at radio shack too.. works fine splitting my cable tv and internet (yes, i pay for my cable tv. lousy analog extended basic, but it's better than using an antenna)

 

[Kashan]

Depends on which company you use. For the cable company in Michigan Propiertary modems ran at 734MHz, and docsis ran at 943Mhz I believe. If you have Comcast service, avoid radio shack with a passion, alot of Radio Shack equipment (mostly amps) will not work if you have digital signals coming in.

1000 MHz splitter should do you fine, 3 cable companys i have worked for and not one has ran above that, the FCC dont allow it to my knowledge for broadband.

When I first got my cable modem I picked up a 4 way splitter 1 in 3 out at the dollar store by my house, works fine still have it. Just get a 1GHz splitter and you should be good to go.

 

[T2T III]

I'm not sure which frequency my splitter is configured for. But, when I had my Internet cable service installed on Friday, the technician refused to use my connection off of the splitter. Instead, he split the connection outside the house and ran a new cable into my computer area.

 

[bmacd]

Originally posted by: wje
I'm not sure which frequency my splitter is configured for. But, when I had my Internet cable service installed on Friday, the technician refused to use my connection off of the splitter. Instead, he split the connection outside the house and ran a new cable into my computer area.

he did that b/c the signal degrades evertime you split it. You want to run the most pure signal possible to your cable modem to guarantee the most bandwidth.

At my house, split off the trunk line, one goes to my cable modem, and the other goes to an amp, then a distribution block.

-=bmacd=-

 

[Pepsi90919]

Originally posted by: wje
I'm not sure which frequency my splitter is configured for. But, when I had my Internet cable service installed on Friday, the technician refused to use my connection off of the splitter. Instead, he split the connection outside the house and ran a new cable into my computer area.

because you're only supposed to split it once between drop and modem using good cable... your connection was of questionable quality and origin.

 

[guyver01]

Originally posted by: NutBucket
What frequency(ies) does cable internet work at? Followup question to that is where do you find splitters that are of wide enough bandwith to carry "regular" spectrum and that required for the 'net?(Besides calling up the cable company you smart@sses out there)

In the downstream direction, the digital data is modulated and then placed on a typical 6 MHz television channel, somewhere between 50 MHz and 750 MHz. Currently, 64 QAM is the preffered downstream modulation technique, offering up to 27 Mbps per 6 MHz channel. This signal can be placed in a 6 MHz channel adjacent to TV signals on either side without disturbing the cable television video signals.

The upstream channel is more tricky. Typically, in a two-way activated cable network, the upstream (also known as the reverse path) is transmitted between 5 and 42 MHz. This tends to be a noisy environment, with RF interference and impulse noise. Additionally, interference is easily introduced in the home, due to loose connectors or poor cabling. Since cable networks are tree and branch networks, all this noise gets added together as the signals travel upstream, combining and increasing. Due to this problem, most manufacturers use QPSK or a similar modulation scheme in the upstream direction, because QPSK is more robust scheme than higher order modulation techniques in a noisy environment. The drawback is that QPSK is "slower" than QAM.

The splitters you should use should say "5 - 1000 Mhz" on them..

One of the best splitters you should try to find is Antroniix.