how do i get TV and internet simultaneously from the same coax outlet without loss?

[Anarchist420]

is it possible? if so, then what do i need?

 

[imagoon]

Moca. Docsis.

 

[smitbret]

Diplexing. That will piggy back both signals on one coax, but you'll need to make sure that your coax network is in good shape with as few a connections and splits as possible.

Also, if you are using satellite instead of cable, the diplexers will need to be rated for Satellite (2300MHz) instead of standard cable diplexers (900MHz).

 

[imagoon]

Diplexing. That will piggy back both signals on one coax, but you'll need to make sure that your coax network is in good shape with as few a connections and splits as possible.

Also, if you are using satellite instead of cable, the diplexers will need to be rated for Satellite (2300MHz) instead of standard cable diplexers (900MHz).

It isn't quite that cut an dry. First, you have to know the frequency bands that will be combined. Signals may need to offset (frequency shifted to above or below the other.) On most newer systems, a "traditional" diplexer would result in garbage out. Many of the cable systems are moving (far past) past the traditional 750mhz cut off, the same thing is happening at the satellite side with technology like SWM.

MOCA is an active technology that searches for empty ATSC bands in cable and then encodes Ethernet on to those channels. Even these only really work if they support the extended channel sets (above 750mhz) in many areas. Docsis is more for the plant owners where they decide what ATSC channels are datastreams.

Add on to that fact that to use a diplexer would would actually need to build and design something to encode the frames on to the coax in the first place.

Since the OP's question is about as vague as possible we can't offer him a solution.

 

[QuietDad]

If it's the same cable provider, com out of the outlet into a splitter. One to the modem and one to the TV box. Can't split/share a cable without loss. Also, don't buy cheap splitters like from Radio Shack. Check them and make sure if they're bi-directional and the loss rating on the splitter is no more than -3.5db on the label. You should be OK.

 

[smitbret]

Since the OP's question is about as vague as possible we can't offer him a solution.

Exactly.

Tough to give a detailed response with so little information up front.

 

[azazel1024]

Vague answer.

No. You cannot split it without a reduction in signal strength.

Slightly longer answer, you can use a diplexer, which won't cause that to happen.

Longer answer, diplexers mean you MUST know the frequency ranges you are using and require you to take other things in to account.

TL;DR answer, it shouldn't matter, just get a 2 way splitter that can handle up through 1000MHz and you should be fine.

 

[alkemyst]

OP, like others have said. Get a good 2 way splitter and then whatever splitter you need for the rest of your TV's. You want to avoid 900MHz to 1000MHz and get a 2GHz or better.

For most, this will provide more than enough signal for even highest bandwidths at the internet device.

My house suffered as they joined RG6 from the pole to an RG59 cable at the roof line and tried to hide that. Not to mention they had a two way splitter doing nothing that went into a something like 8 way that was just used to go to another two splitters and then a final two way to go to where my modem was. I couldn't even stay connected to broadband, most of my TV's had good pictures still except one room which was due to a bad termination.

I cleaned it up with all new RG6, a two way to 4 way and caps on all the rooms not being used currently and wall plates. The caps are probably over kill but they came with the compression tool kit I bought. Took an afternoon in the attic.

 

[Anarchist420]

thanks to all who answered. I actually figured out that I have more than one outlet I can use now but I have a several more questions (sorry if they are stupid) as follows:

1. i have some kind of jack in my wall that can plug into my router or my computer's GbLAN port. what is it called? what is it used for? is it an alternative way of hooking up my router? if it is, then is it as fast as a coax connection?

2. i believe i have a splitter for the whole home rather than runs to each outlet. the splitter is 3.5 db for each coax connector (there are two) or something like that and 1.675Ghz maximum if i remember correctly. i got ~3.2MBps downloads on steam at the place i used to live at which had runs to each outlet and i have the same service.

is there any way I can get 3.2MBps at the new place (other than having it rewired)? if yes, then how?

thanks in advance.

 

[smitbret]

thanks to all who answered. I actually figured out that I have more than one outlet I can use now but I have a several more questions (sorry if they are stupid) as follows:

1. i have some kind of jack in my wall that can plug into my router or my computer's GbLAN port. what is it called? what is it used for? is it an alternative way of hooking up my router? if it is, then is it as fast as a coax connection?

2. i believe i have a splitter for the whole home rather than runs to each outlet. the splitter is 3.5 db for each coax connector (there are two) or something like that and 1.675Ghz maximum if i remember correctly. i got ~3.2MBps downloads on steam at the place i used to live at which had runs to each outlet and i have the same service.

is there any way I can get 3.2MBps at the new place (other than having it rewired)? if yes, then how?

thanks in advance.

1) Just sounds like a standard ethernet port. You just use it to extend the reach of your wired network without running new cables throughout the house.

2) I'm not sure what the 1.675GHz maximum is referring to, but 3.5db just rates how much signal loss is occuring on the coax when you use the splitter. 1 splitter is probably not going to crush you, but a LOT of it is going to depend on how degraded the signal was before it gets to the splitter and how long the cable runs are after the splitter. When you say 3.2MBps, do you mean 3.2Mbps (megabits) or 3.2MBps (megabytes). I think you meant MB, which is roughly equal to ~26Mbps. Either way, both should be easily achievable, even with a network that isn't perfect. In fact, if that is the ceiling of your requirements, then a wireless connection would be plenty fast for your internet/networking needs. For the cost of the diplexers and extra coax cable, you could get a cheap Wireless N300 router that you could set up as an Access Point with the port from Question #1 if everything is cabled to the right places.

 

[QuietDad]

As a cable TV installer, what it sounds like is the house has the rooms wire with one coax and one ethernet connector to each room. When I install a house, where the cable comes in, the FIRST splitter is a two-way splitter. One side gets wired to the room that contains and is wired into the modem and the modem is the ONLY outlet on this side. The other side of this outlet can go into up to a 6 way splitter with each lead going to a TV. Usually anything more that a 6 way splitter makes the signal too weak to have the TVs not pixelate or not strong enough to even get the set top boxes to load. Can't make this call with out a signal reading of the cable that supplies the house. Typically, a Two way splitter losses 3.5 db per split, a 4 way 7.0db per split, 6 way splitters are 9 dbs and 8 ways 11db. I have seen 8 ways work.

What you need to find is the other end of your ethernet port. This is where you would install your router. you should find every room terminates at the same spot. You put your router there and wire it to each room and then you just need an ethernet cable to the PC in each room.