Question I'm trying to add a MoCA device, and it messes everything up ?

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axlrose

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Jun 11, 2008
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I'm missing some basic principle and wondering if you can help me figure out what it is. I have a wifi dead spot in one bedroom. A teenage girl is not happy about that. I ordered new moca devices and a new ubiquiti ap, installed a new shelf, poi+ device etc.

I have coax running into my home theater room where the router is. I didn't have a splitter, so I unplugged the coax to the cable box. Hooked up the new ap to the other ap's. Popped right up. Worked fine. Seemed to get wifi into the bedroom that has always been a wifi dead spot. Went and got splitter. Put a coax cable onto the coax outlet. Put the splitter on the end. Hooked up the moca to one side. Hooked up the cable box to the other side. Internet goes down. AP's don't register. Hardline to my pc and projector go down. Repeated the process a few times. Same result. I'm a couple hundred bucks into solving this problem, and have solved it, but then created a new one. What am I missing. Either works fine coming out of the same coax outlet. Put a splitter on and connect both to them and it's a no go.

Thanks.
 
View: https://www.youtube.com/watch?v=i4SwMwpvN-s&t=251s



Looking at the manual on this install video and his hookup brings a few issues your facing.

In the manual it does use a splitter to feed coax from the Moca device to coax to feed the wall and feed the TV.

There is no" cable TV box" shown as part of the working finished product.

So I myself wonder how network cable from modem feeds the Moca where the coax comes out to splitter what the heck is being fed to TV ?
The signal is from the modem. As per manual?

I get from splitter the in wall coax is being used more or less as a big extension cord from Moca through the wall to the destination AKA your child's room.
So as far as the manual shows the only input feeding the Moca is your modem . Again no cable TV box is shown.

I'm just going on a hunch the cable TV box was not intended to be part of the finished final working product.

At 8:40 in the video he talks about a moca brand splitter.
 
axlrose said:
I'm missing some basic principle and wondering if you can help me figure out what it is. I have a wifi dead spot in one bedroom. A teenage girl is not happy about that. I ordered new moca devices and a new ubiquiti ap, installed a new shelf, poi+ device etc.

I have coax running into my home theater room where the router is. I didn't have a splitter, so I unplugged the coax to the cable box. Hooked up the new ap to the other ap's. Popped right up. Worked fine. Seemed to get wifi into the bedroom that has always been a wifi dead spot. Went and got splitter. Put a coax cable onto the coax outlet. Put the splitter on the end. Hooked up the moca to one side. Hooked up the cable box to the other side. Internet goes down. AP's don't register. Hardline to my pc and projector go down. Repeated the process a few times. Same result. I'm a couple hundred bucks into solving this problem, and have solved it, but then created a new one. What am I missing. Either works fine coming out of the same coax outlet. Put a splitter on and connect both fo them, and no go.

Thanks.
Click to expand...
What is the bandwidth of the splitter? Usually a splitter with a bandwidth of 5-1000MHz is recommended for cable systems. Maybe you could draw a diagram of the whole system and all of the connections from where the cable enters the house.
 
I think those are the type of numbers I saw for the splitter. Just went to the local menards tonight and picked one up figuring it would do that job. Is there a moca specific splitter? Is that a thing?

What can I use to draw?
 
axlrose said:
I think those are the type of numbers I saw for the splitter. Just went to the local menards tonight and picked one up figuring it would do that job. Is there a moca specific splitter? Is that a thing?

What can I use to draw?
Click to expand...


Fiber optic from outside
;
;
Router
;
;
moca adapter
;
;
splitter
; ;
; ;
cable tv box coax
;
;
other moca device, into AP
 
What if there are other splitters along the way somewhere in the house between the router and the bedroom where the coax connects to the other moca device???
 
It seems like what is happening is when you feed both the TV cable box along with the modem that is where the glitch is as you have found out.

Kind of like feeding to amplifiers to the same speakers. The output of one amp is back feeding the other weaker amp so you end up with nothing or a blown amp. Your Moca and cable TV box are back feeding each other.

Do you have more than one coax wire feeding the walls. If you do Moca on one coax and cable TV on it's own.

I'm thinking not but worth a shot to ask.
 
No. Just the one coax going into the wall. I don't imagine there are a lot of setups where someone would have run two different coax lines into the same room in the past.
 
Do you use verizon or another ISP that is using FIOS,verizon sold part of their network a number of years ago.

These are fiber based internet but actually use MOCA. You can actually use the ISP router as one of the moca points but you have to get compatibale moca adapters.

Although moca was designed to not interfere with docsis or cable tv signals some of the very new implementations of docsis are using the moca range.

Moca I think starts at about 1100, If your ISP is using docsis 3.1 it technically go to 1200 but most stay under 1000. I would get into your modem if you can and see if it will tell you the frequencies it is using. There have been rumor for years about docsis 4.0 that completely overlaps moca.

I would try to find all the splitters hidden away in your house so you can get a idea how everything is connected. Key here is where exactly the outside cable hooks up to all your internal splitters, maybe you can isolate things by a bit of rewiring between splitters. You can put a moca filter in to prevent the moca signal from being fed back into the segment that has the internet on it.

When it just doesn't work moca can be a pain.
 
stonecarver said:
I keep thinking of a solution to help but will admit I just keep coming to the conclusion to just run cable through the walls or along the base boards to where you need things to work.
Click to expand...
That's the original problem. My house isn't wired for ethernet at all, so while I've run my own lines of cat6a to four or five rooms now, I can't get lines to that room. If I could, I'd just run more lines of cat6a there.
 
bill001g said:
Do you use verizon or another ISP that is using FIOS,verizon sold part of their network a number of years ago.

These are fiber based internet but actually use MOCA. You can actually use the ISP router as one of the moca points but you have to get compatibale moca adapters.

Although moca was designed to not interfere with docsis or cable tv signals some of the very new implementations of docsis are using the moca range.

Moca I think starts at about 1100, If your ISP is using docsis 3.1 it technically go to 1200 but most stay under 1000. I would get into your modem if you can and see if it will tell you the frequencies it is using. There have been rumor for years about docsis 4.0 that completely overlaps moca.

I would try to find all the splitters hidden away in your house so you can get a idea how everything is connected. Key here is where exactly the outside cable hooks up to all your internal splitters, maybe you can isolate things by a bit of rewiring between splitters. You can put a moca filter in to prevent the moca signal from being fed back into the segment that has the internet on it.

When it just doesn't work moca can be a pain.
Click to expand...
How would I find all of the splitters? I purchased a moca grade one to replace the one in my utility room. It has spaghetti bowl of coax coming out of it going all over the house.

As for the Verizon thing, we have had and paid or a device for probably a year now (ugh) and never used it. It seems it has to get a signal like a cell phone does, so it has to sit on the main floor by a window as I understand it, and then the speeds it gets...vary as I understand it. I would have to re-run everything in the house again to get lines into the basement where our current fiber optic comes in. That is where the home theater is. I'm not even sure how I'd start doing that project.
 
axlrose said:
I can't get lines to that room. If I could, I'd just run more lines of cat6a there.
Click to expand...
Fair enough I here you.

If I may or may not ask what road blocks are stopping running the wire. Just curious.

To far, block walls, second or third floor. Detached room from main
house. Not pushing for you to run the wire just trying to figure out the mystery. :)
 
stonecarver said:
Fair enough I here you.

If I may or may not ask what road blocks are stopping running the wire. Just curious.

To far, block walls, second or third floor. Detached room from main
house. Not pushing for you to run the wire just trying to figure out the mystery. :)
Click to expand...
Sure. So I've run all of the other lines from the basement (where the ethernet enters the house, and where the home theater is and the router etc. up through some space in the walls and into the attic space. Then I run it through the attic and down into the main floor again, or the second floor. The one room I can't get to is a basement bedroom. It's on the opposite side of the house from the previously mentioned devices where the ethernet comes into the house. I tried to find where I could run it in the basement, but the basement has these

https://diy.stackexchange.com/questions/238043/how-to-frame-a-basement-ceiling-for-drywall

in the ceiling, and I can never figure out how I'd get through all of these with the cat6a. They run perpendicular.
 
Local company is switching over to a new service system for internet and cable, so I'm off of the cable box as of this morning and onto a fire cube instead. Maybe now without having to have the cable box and the moca cable running through the same line, and with the new moca speed splitters installed in two places, the moca devices will get internet to my new AP without messing up the rest of my electronics. ?
 
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