Last time I'm going to say this.

There is zero, nada, zilch, no good reason to rely on WIFI if wired is an option. Not a one.

Getting wired ethernet to a location may be a bit more challenging up front but it will be dead nuts reliable over the long haul.

You will spend less time upfront vs dealing with all the crap that can plague WIFI networks over time.

Hell, even humidity affects WIFI because moisture has reflective properties that can degrade a signal. It won't kill it outright but can negatively impact performance.

If the device that needs a signal is stationary, TV, desktop PC, your first thought should be how do I get wired ethernet here.

WIFI should be your last resort.

You are overthinking this.

Your situation is exactly what MoCA extenders were specifically purpose built for.

99% of the time you just split it in the right place and it just works.

I think this is the idea for using MoCA. Put the internet signal on the COAX and then take it off and use where needed. Does this work? Not sure about the "loop" created at the first MoCA box - my Comcast (modem/router) doesn't have coax out.

http://forums.pelicanparts.com/uploa...1640022824.jpg

YES pretty much. gimme a sec

See if you find the moCA that has the through/out coax you can do this.
Imagine the internet 'piggybacking' through the length of cable to the TV area, and then you grab it back out at the end, like your diagram.

It's actually quite similar to a powerline adapter in concept.

http://forums.pelicanparts.com/uploa...1640027401.jpg

http://forums.pelicanparts.com/uploa...1640028058.jpg

I would be surprised if your router was not already fully MoCA enabled.

It needs to be on the input side to use the ethernet present in the coax signal from Comcast.

There is no reason they would only enable one side.

The only times I don't see MoCA enabled at a residential router is with FIOS and that's rare.

FIOS is fiber and uses an ONT (Optical Network Interface) which has fiber in and can output ethernet over coax or cat 5 to the router / modem.

It's MoCA enabled coax by default and only ever provisioned for ethernet at customers request in special circumstances.

Set top boxes also communicate over tcp so MoCA has to be enabled for them to work.

Split the coax at the TV and drop a MoCA extender there.

It should be that simple.

Thanks guys. Give me a few hours to digest this. Going out on a bike ride to clear my head.

So am I just barkin up the wrong tree? lol

No not entirely.

But I've been doing this for a long time.

Back before extenders became a regular consumer product I used to collect routers from neighbors who never returned them and used to "dumb them down" by setting them to bridge mode which is effectively what they sell today as MoCA extenders.

Bonus there was you could leave WIFI enabled so you had access points that were all hard wired together.

It was how you built pseudo mesh networks before mesh networks became a thang.

An issue is the first MoCA needs to go back near the Comcast gateway box. That means there could be a couple of hops over some splitters. I'll make a more to scale diagram. This is going excellent - thanks for all the help.

I just noticed something. It looks like I have an internet output on the back of my Xfinity DVR cable box. What are the chances the MoCA is already there? Here is a picture of the back of my DVR cable box.http://forums.pelicanparts.com/uploa...1640097073.jpg

I read that yes the ethernet port should be active via MoCA but in the case of the Comcast box the yellow port is not active so can't be used. So I may be back to setting up the 2 MoCA's.

The model of my Xfinity X1 DVR box is Arris AX013ANM.

Here is a "big" picture diagram. Shows where I would put the two MoCA boxes. Is this correct now? Any issues with the length going back to the splitter and then back in the attic? I can direct RJ45 connect with the TV until I get the Roku with an ethernet port.
I like (need?) the MoCA boxes that have in and out for the coax. The model Actiontec EBC 6200 is the best or preferred one? Many thanks for all the help.

http://forums.pelicanparts.com/uploa...1640100188.jpg

@gogar, @stomachmonkey - should I pull the trigger on the Actiontec ECB 6200 set of modules? Anything I'm missing? Thanks.

trigger has been pulled.

I think your last diagram will work.

I still think you only need the one but buy two.

You can either return it or find a use for it like hardwiring your wifes computer or extending WIFI by adding a hard wired access point some where else in the house.

You think the MoCA signal is already on the coax? Any harm to hook up both to begin with? Maybe just try the one at the DVR and see if I get the internet? Try to hook up my laptop there at the DVR with a patch cable.

This thread made me get off my butt and finish expanding my Mesh WiFi and removing all of my old WiFi components.

Now getting 650 download speeds over WiFi

Glad this thread is providing some usefulness - not just to me. I'm excited to see if the MoCA parts I just ordered will work. My wife is not digging the ethernet cable draped around the side of the room as the temporary setup.

I'm still not sure if my last diagram will work... when I put the MoCA signal on the coax before it gets to the modem doesn't that put MoCA all the way back up to the telephone pole running behind my house? My modem (Comcast) doesn't have two coax connections.

sure but it'll also send it to the cable box area. The splitter isn't a one-way thing.

errrr. (car forum) there's no check valve on the splitter.

Could be a check valve on the splitter that the Comcast guy put in on the side of the house where the coax comes in.

Yes

Where the Spectrum enters your house what does the split look like?

I'm assuming coax comes into home, there is a splitter, one leg goes to the router and one leg goes to the cable box / boxes?

Yes, things are just like my last diagram. I'll post a picture of the splitter. Hopefully that splitter is special if it needs to be. I think the potential problem is I don't have any coax "behind" a router.

Here is the splitter just after the coax comes to the house from the telephone pole.http://forums.pelicanparts.com/uploa...1640190120.jpg

To help clarify - here is the current solution under consideration.http://forums.pelicanparts.com/uploa...1640192029.jpg

Interesting.

So your DVR authenticates back to the provider on it's own and not through the router which is more standard.

And the router authenticates on it's own as well.

I'm hoping on a plane in a bit so if I'm not active I'm not ignoring this, just travelling.

There is some internet discussion on keeping your MoCA from getting over to your neighbors.

This is recommended.
https://www.amazon.com/HOLLAND-ELECTRONICS-3-WAY-BALANCED-SPLITTER-MOCA-COMPLIANT-5-1675MHz/dp/B01552LYL6/ref=cm_cr_dp_d_rvw_txt?ie=UTF8

There is also this "filter".
https://www.amazon.com/Filter-MoCA-Cable-Coaxial-Networking/dp/B00DC8IEE6/ref=cm_cr_srp_d_product_top?ie=UTF8

New info. The coax coming to the house before the splitter has what I thought was just a connector but it is a MoCA filter. Model GLP-1G70CW MoCA® Filter. I'm guessing this is to keep stray MoCA signals out of my house and keep my MoCA signals from getting on the Comcast network. So Comcast knows about MoCA and I suppose they want to keep their network clean.
I also went to the Comcast/Xfinity store in person and asked. One guy I talked to said almost for sure my modem/router (gateway) from Xfinity is putting MoCA on the line (coax).
@stomachmonkey - you may be exactly right I might need only one MoCA adapter.
I was also reading about the two MoCA objects or adapters need to pair with each other but this should be automatic.
We'll see - stay tuned to the continuation of this exciting story.

Ms Gogars xfinity is the same and plugs into the coax and does its business however it does.

I don't have cable, just Xfinity internet and an Arris something or other. I passed on the Xfinity router.

Pictures of the filter I found already installed by Comcast.

Filter and Splitter
http://forums.pelicanparts.com/uploa...1640230863.jpg

Close up of Filter to see part number
http://forums.pelicanparts.com/uploa...1640230863.jpg

Some progress. As mentioned, the guy at the Xfinity store said my modem has MoCA. This morning I went into the modem using 10.0.0.1 and low and behold the option to enable MoCA on was there. I enabled it and saved the settings. So I probably only need to insert one MoCA module at the TV location to get an internet connection. Stomachmonkey was correct. Stay tuned.

Here is a good intro. to MoCA.
https://www.youtube.com/watch?v=I9Vro0d38pA

MoCA signals are passed over the coax at a much higher frequency than the TV cable signals so it doesn't interfere with the TV cable signal and can be running at the same time. The MoCA signal degrades fairly quickly so it doesn't go very far maybe to your neighbors house but not more. I suppose the recommended MoCA filter stops even that from happening. This is all very interesting, especially since I'm trying it myself. :-)

I feel good. The MoCA adapters came today. I plugged one in at the TV DVR and supplied power and it worked. This is after I enabled MoCA on the Xfinity modem. It picked up the MoCA coming out of the modem about 120 feet away over coax. I'm getting about 120 mbps download over the ethernet patch cable coming out of the first MoCA adapter. That's enough I think for watching Netflix/etc. This is probably the end of the story unless people want more detail. Many thanks to gogar and stomachmonkey.

This just in:

Check out the "xfinity stream" beta app on your roku and it will do everything your cable box does inside the roku, if you want! Eliminate the cable box.

I don't think it will do the record function ?
I'm getting close to being able to cut the cable.

Looks like it has cloud DVR just like my Xfinity DVR... very cool.