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Discussion Starter · #1 ·
Hi, We are in the process of finishing our basement off, so I need to run some coaxial into the room. We already have a signal amp (installed by TWC), so I think I'll be good there. I want a few CATV jacks in the basement. Also, when I opened up our CATV box on the outside of our home I saw that there is a 3- way splitter with all of the OUTS occupied. So, my first question is: Is it okay to simply remove the 3-way, add a 5-way and just run two lines into the basement( or go with a 4-way and run one line into the basement and split inside)? Second: If the answer to question one is YES, what is a good 5-way splitter to go with? Thanks a bunch for any help.
 

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Good luck finding a 5 way. Get a 4 way and split one of the output legs with another 2 way. Send the outputs of the 2 way to the 2 closest sets. You're better off to run separate lines to the basement then to split inside, unless both lines are needed at the same place (TV and VCR for example).
 

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Discussion Starter · #3 ·

Quote:
Originally Posted by olyteddy /forum/post/18311668


Good luck finding a 5 way. Get a 4 way and split one of the output legs with another 2 way. Send the outputs of the 2 way to the 2 closest sets. You're better off to run separate lines to the basement then to split inside, unless both lines are needed at the same place (TV and VCR for example).

What do you think of one of these:

http://www.yourbroadbandstore.com/pr...php?pid=202275

http://www.uxsight.com/product/45125...-splitter.html

http://www.buy.com/prod/monster-cabl.../90109002.html
 

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Discussion Starter · #5 ·
We already have a cable modem running in an upstairs bedroom. There will not be on in the basement area we are finishing.
 

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The Monster Cable splitter is likely far more expensive than you want to pay. The second one listed does not mention "EMI Shielding" (in dB), or "solder back", which is important for shielding from ingress and egress of signals.

The first one does, so I might go with that particular brand.


You should keep the line to and from the cable modem as low-loss as possible, though. The Cable guy probably even hooked that run to the lowest loss port (-3.5 dB) on the three-way splitter....all splitters are just cascades of 2-way splitters, anyway). The others are probably -7 dB.


Get a 2-way splitter and a four-way, connect one output of the two-way to feed the modem, and the second to feed the four-way. That gives the Cable modem a good, low-loss signal path in both downstream and upstream directions. The modem gets -3.5 dB (half the power), the rest get -10.5 dB.

If there isn't enough signal level left for the TVs, you'd need an amplified splitter...but, you may be OK with just the passives.


If you do need an amp, go with the name brands, "bi-Directional" or "two-way path" versions...your local Cable company may just give you one across the counter (or, a +15 dB gain, single output amp, which would go just before the 4-way splitter, making it the same as a splitter/amp).
 

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Discussion Starter · #7 ·
Okay, now that I've been home and have had an opportunity to look at the CATV box on the side of our home, I'll post them and give a more detailed description of what's inside:


1. The Amp is a PCTMA21P Multimedia Drop Amplifier

2. The 3-way splitter is a PCTNGN113SB Genesis II

*both supplied by TWC


Coming out of our home are 6 coaxials (3 not hooked up to anything, why I don't know). One of these is going into the RWRFF jack on the amp(I guess this is the one that ends up in our spare bedroom where the modem and a TV are). The other two run into the splitter.


Coming out of the other side of the amp are 2coaxials - one running into the third splitter OUT and the other being the power supply that runs into the house and plugs into an outlet.


I am going to drill a hole in the side of the house and run 2 coaxials into the basement for each wallplate (only one will be used at a time for a TV. We are simply installing 2 in case we want to move the TV to a different wall). If I can do this myself I will save myself $89 bucks TWC will charge me (and that's if it takes an hour or less). If I can hook everything myself I will save another $45.


I have 2 splitters currently in my possession I can work with; a 2-way 5-1000MHz w/ -3.5dB outs and a 4-way 5-2300MHz (no markings on the outs).


What can I do with all this? Thanks for all the help.



 

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If you have an amp supplied by the cable company for the few outlets you have, they did a bandaid fix. You either need a new drop, new fittings on existing if coax no visible damage, different port at the tap, system swept and balanced, or the tap fixed/repaired/replaced. They need to get the signal coming to your place within spec. And most important, a proper ground block. Not grounded through splitter. Reeks of inhouse. That being said, your drop coax goes into GB-into 2 way. One leg supplies the modem. Other leg goes to next splitter. If the outlets hooked up now are all you use, along with the 2 you are adding in the basement, put in a 4 way. Unless their system is total FUBAR, you "should" have plenty of signal. If amp is still needed, it would be between the 2 way and 4 way.
 

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Discussion Starter · #9 ·

Quote:
Originally Posted by jkxmlr /forum/post/18318280


If you have an amp supplied by the cable company for the few outlets you have, they did a bandaid fix. You either need a new drop, new fittings on existing if coax no visible damage, different port at the tap, system swept and balanced, or the tap fixed/repaired/replaced. They need to get the signal coming to your place within spec. And most important, a proper ground block. Not grounded through splitter. Reeks of inhouse. That being said, your drop coax goes into GB-into 2 way. One leg supplies the modem. Other leg goes to next splitter. If the outlets hooked up now are all you use, along with the 2 you are adding in the basement, put in a 4 way. Unless their system is total FUBAR, you "should" have plenty of signal. If amp is still needed, it would be between the 2 way and 4 way.

If one leg coming out of the house is running into the amp, is this the leg that supplies the modem?


Also, if what you see in these pics is not correct, I wonder how I get TWC to admit it's wrong and correct it if they are the ones who rigged it in the first place?
 

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Once again, they band aid fixed a signal issue. How about backing off and getting picture of house box in its entirety. Couple angles maybe. Amp should have an RF in port. This is from cable company plant(drop). Another should be PWR. And third is PWR/RFout. PWR is used when power for wallwart transformer with coax fitting is close by. Coax feeds to amp. PWR/Rf out is used when remote feeding from one of the TV locations. Then you have a power injector(looks like a splitter sometimes) behind the TV. Picts requested will help follow the wiring. But again, sometimes being there is best. Will offer what help I can.
 

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Quote:
Originally Posted by TigerJon /forum/post/18311364


Hi, We already have a signal amp (installed by TWC), so I think I'll be good there.

As best as I can figure, the amp is only amping one of your feeds going into the house.


The feed from TW is going into a balanced 3-way. Each port is -5.5. Two ports are going into the house unamped. Only one port is going to the amp then into the house.


Like jkxmlr said, TW may have band-aided a signal issue. Can you undo each of the three black coax cables one at a time and report what each one disconnects inside the house.


Lastly, can you report your modem signal levels. All this will help to figure out your setup and possible fixes.
 

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Been awhile since I looked into one of those. Don't think there is a login. Might be a tab labeled Signal, Diagnostics, something like that. If I remember, sometimes they give a generic page showing that cable co has locked page.
 

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Discussion Starter · #20 ·


I'll give this a shot. Thanks! I think I'm going to still have TWC come out though. I figure I'm going to spend between $10 and $20 on a good 4-way splitter. TWC will charge me $42 and I won't have to worry about not getting something right. Besides, I want to point out some of the issues(especially grounding to the 3-way splitter already in the box) that jkxmlr raised in an earlier post to see what they say.


I will say this about the current service; it seems to work okay...I think. In the bedroom with the modem, the coax splits before the modem and one leg runs to the modem, the other to a TV. We do not have a cable box or DVR on this TV, so the highest channel we get is something like 74. I have noticed that on this TV some of the higher channels (i.e. Disney and TCM) have reception that is not as good as the rest of the channels. Any suggestions on this? Also, and I don't know if this is a signal issue or a DVR issue, we have only one TV in our home with a cable box (it is a DVR...a SA 8300HD). We have had to return at least one of these in the past because it did not seem to be working correctly. THe thing that drives me nuts with this DVR (and it may be all DVRs for all I know), when I start surfing the thing can't keep up. Let's say I start out surfing from channel 274 and surf up to 290, once i get to 290 there is a delay in the display showing 290(289 may be on the screen while the info bar says 290...then 290 will appear). Any ideas on this? Thanks for all the help.
 
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