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n0c7 12-11-2008 08:54 PM

Coax Splitters
 
I currently have 900MHz splitters. I have recently switched over to cable internet and one digital HD box, the rest of the TV's are analog with built in analog tuners which works fine with my cable service. Should I take this opportunity to switch the splitters to 2.4GHz? Furthermore, how many TV's can I have split before I start to see signal degradation? I currently have two 4-way splitters with no signs of degradation.

jerryh3 12-12-2008 03:33 AM

I've used 5-1000mHz splitters for my cable system and have had no problems. Here is good explanation of signal loss and you can decide from there if you want to reconfigure the splitters.
http://www.swhowto.com/VideoLoss.htm

rgsgww 12-12-2008 08:23 AM

5-1000mhz splitters are fine. What I do is run all of my coax to the coax enterence. Make sure your using rg/6. Be sure you have got good grounding.

Don't waste money on "gold plated" splitters, or some fancy thing like that. Nickel plated works just fine. I wired my system like that and have no problems:thumbsup:

n0c7 12-18-2008 09:31 AM

I want to split it off 8 ways, but I'm not sure if the cable company will appreciate it that much..... :ninja:

jerryh3 12-18-2008 09:34 AM

Quote:

Originally Posted by n0c7 (Post 199673)
I want to split it off 8 ways, but I'm not sure if the cable company will appreciate it that much..... :ninja:

Why not?

n0c7 12-18-2008 10:58 AM

Rumor has it that your first 4 outlets are fine, they'll let 6 slide, but if you have 8 they want to charge an extra $5/month for outlets 4 to 10 or something.

jerryh3 12-18-2008 11:11 AM

Quote:

Originally Posted by n0c7 (Post 199689)
Rumor has it that your first 4 outlets are fine, they'll let 6 slide, but if you have 8 they want to charge an extra $5/month for outlets 4 to 10 or something.

Around here it's a flat fee per house.

rgsgww 12-18-2008 11:41 AM

Quote:

Originally Posted by n0c7 (Post 199689)
Rumor has it that your first 4 outlets are fine, they'll let 6 slide, but if you have 8 they want to charge an extra $5/month for outlets 4 to 10 or something.


They don't know whether you split it or not, the only thing you should worry about is signal loss. You might need an amplifier.

n0c7 12-18-2008 12:17 PM

Currently I have 7 TV's and a cable modem connected, 6 TV's are analog, and the seventh is a digital HDPVR. My dB levels are right in range, and I don't notice any degrading on any of the analog TV's and its been running fine for 4 years excluding the recent addition of the cable modem. I must have a good signal coming into the house. I'm using cheap 900MHz no-name splitters as well.

Here's my new plan:

I'm going to have a BGI 5-1000MHz 4-way splitter. Connected to this will be the cable modem, digital phone, and the other two ports will run to two 4-way Antronix 5-1000MHz splitters. 4 TV's to each splitter.

Thoughts? I will try it when I get home.

rgsgww 12-18-2008 12:32 PM

Quote:

Originally Posted by n0c7 (Post 199725)
Currently I have 7 TV's and a cable modem connected, 6 TV's are analog, and the seventh is a digital HDPVR. My dB levels are right in range, and I don't notice any degrading on any of the analog TV's and its been running fine for 4 years excluding the recent addition of the cable modem. I must have a good signal coming into the house. I'm using cheap 900MHz no-name splitters as well.

Here's my new plan:

I'm going to have a BGI 5-1000MHz 4-way splitter. Connected to this will be the cable modem, digital phone, and the other two ports will run to two 4-way Antronix 5-1000MHz splitters. 4 TV's to each splitter.

Thoughts? I will try it when I get home.

Make sure they are bi-directional for the digital equipment.

Sounds like you have a good signal, post back with results.

n0c7 12-18-2008 12:40 PM

How can I tell if their bidirectional, and if their not, how can I tell?

Wildie 12-18-2008 02:30 PM

Quote:

Originally Posted by n0c7 (Post 199731)
How can I tell if their bidirectional, and if their not, how can I tell?

Your cable modem won't work on uni-directional!

MgMopar 12-18-2008 06:32 PM

The cable company around here cares most about leakage. The have equipment to detect a signal inserted in to the cable single that they can locate poor shielding in your or there connections. If you use termination load on all unused splitter connectors and all of your wiring is solid and crimped good tightened properly you will have minimum leakage and they most likely would never even know how any tv's you have hooked up. You may need a amplifier to boost the signal depending how strong it is coming in.

n0c7 12-18-2008 08:13 PM

I've tested the above method that I mentioned. Everything is still crystal clear. HDPVR is getting 35.6dB SNR. 7 Analog TV's all on at the same time look great. Cable modem specs changed alot:

Before:
Downstream:
Signal to noise ratio: 33.7dB
Power Level: -4.3dBmV

Upstream:
Power: 37.0dBmV

Now:
Downstream:
Signal to noise ratio: 35.6dB
Power Level: 1.3dBmV

Upstream:
Power: 30.0dBmV


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