coax splitter - cable internet

I have cable internet and cable TV. What I'm trying to do is use a splitter on my cable line so I can connect both the TV and the computer. Now I know this is not recommended...but I've seen it done before with no problems.

So I got a 5-1100MHz two-way splitter from Radio Shack and hooked it up. The TV works, but not the internet. Seems the cable modem doesn't like the signal. Am I using the right splitter? What can I do to make this work? :confused:

Thanks!

"I have cable internet and cable TV"

Are you currently paying for both services?
If not, the cable service is switched off and it won't work till you call and sign up.

If yes to you already have the cable service, how is it wired now?

Hi

As I see it looks for me like ONLY TV splitter - you will get two TV signal from one. Try attaching TV to either it or the other connactor.

I'm Polish so the signal characteristics might be dfferent, but
the more or less the same products like this one:

http://www.tridex.com.pl/j/1328.jpg

is designed ONLY for TV

For using TV and internet I have sth like that:

http://www.tridex.com.pl/j/5875.jpg

Although the outputs look the same maybe it's different. My provider give me it. Maybe contact ISP or check if the cables are attached firmly to the product you bought.

Good luck

I use the first splitter for cable and internet access with comcast. (they provided it)

With analog cable, you can split a number of times before it becomes a problem. However, if you have a satellite dish, digital cable, or cable internet, you can't really spilt the signal without problems unless your splitter has a built in amplifier. You just need to check with the cable company and make sure you're using the right thing.

I was originally using an amplified splitter from Radio Shack (about $20) which worked well, but had to be located near a power outlet. A few weeks ago in "Lowes", my local home center superstore, I spotted this 4-way splitter (1 in, 4 out) that's specifially marked for use with digital cable/satellite system.

It's rated from 5 to 2300mhz, which I guess makes all the difference. I swapped out the amplified splitter for this passive one with no problems, and have 2 available ports as a bonus. Not bad for $12.

mine is on a standard splitter, but then there is a filter of some type between the splitter and modem. I assumed this was necessary to get the tv signal out of there or something.

but just because your area supports cable modem, it will not work if they have not switched it on for you. ours can be switched on and off right from the help person on the other end of the phone.... i've seen them do it for me.

Quote:

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Originally posted by Daneph2
mine is on a standard splitter, but then there is a filter of some type between the splitter and modem. I assumed this was necessary to get the tv signal out of there or something.

but just because your area supports cable modem, it will not work if they have not switched it on for you. ours can be switched on and off right from the help person on the other end of the phone.... i've seen them do it for me.

---

Also, some systems have a special filter in the box outside the house/apt without which the internet does not work. What AT&T and comcast does.

Howdy:

Man.. you can't just hook up a modem to a cable outlet and expect broadband just because you are getting cable.. The cable provider would have to assign you a username and passweord as well as a tcp/ip and dns that you would need to install on your connection. And, you only get that when you sign up for a broadband connection through them..

Get serious.. if it were that easy, who would ever PAY for cable broadband !!!!

Murray

You guys didn't understand me right :(

I already subscribe to cable internet.
I already subscribe to cable TV.

I want to run one wire to the room that has a TV and a computer, then split this one wire to both the TV and the cable modem.

Thanks again!

Okay.. so how does your connection work??

Cable wall jack>coax cable>Splitter>one coax cable to modem and then cat5 cable from modem to nic on computer??

Murray

How it works now:

Wall jack -> coax wire -> cable modem


How I want it to work:

Wall jack -> coax cable -> coax splitter =>
coax splitter[output A] -> TV
coax splitter[output B] -> cable modem

When doing this setup the TV works, but the cable modem does not receive a valid signal. What splitter do I need?

burfo:

Have you checked with your cable supplier??

Murray

Hello, first off, if you have Comcast, for the most part, if you have Cable Internet, the line also carries basic cable. That is one of the reasons they charge 15 dollars more if you don't have Cable TV (because they can't prevent you from plugging in an 'analog' TV tuner to it).

Second, I have about 5 splitters in my house. Repeaters and amplifiers don't work at all with digital signals (according to my experience). Since Cable Internet is TWO WAY, it is recommended that filters be applied to all cable connections that are NOT hooked up to a cable modem (thus, the signal to the modem is unimpeded).

Most splitters do add 'attenuation' (signal loss). Therefore, it is best to have, say 1 five way splitter than 5 two way splitters. Because eventually, the cable modem won't pick up the signal any more.

You will see better results splitting the cable once at the source (or if you want the computer an TV togather, put in a splitter AND a filter on the TV's coax run (not before the split).

Interesting enough I am having problems again with my connection as well!!! I am going to be calling Comcast for the 5th or 6th time this year (Since April) because my internet service keeps going in and out...They have replaced the cable modem and a splitter. They have been out 4 times so far, and each time they got it working for about a week before I started having the same problems. I think it is the coax itself...Anyways, I have the following setup at home...

Main Coax from Pole to house has 1 splitter that divides teh TV and the internet.

the TV line has 4 splits after that, the internet has none.

This setup has been around my house for years now, just started having problem this year though.....I will be calling Comcast today.