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CODA-4582 MoCA 2.0 setup

alan4160
I plan to stick around

Thanks for the advice.

Also just wondering if I want to use Actiontec bonded MoCA 2.0 Network Adaptor ECB6200 duo pack, is that mean I can ONLY use them on the Rogers CODA-4582 directly, but NOT with ASUS GT AC5300 connected right?

 

*Added Labels*

137 REPLIES 137

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - hopefully the below future state diagram helps clarify.  All basement equipment will be at the demarcation point/room with the exception of the Netbox.

 

"Can the MoCA adapter go in the same room as the modem with any ethernet devices in the basement connecting via ethernet cable?"

Yes, they will be in the same room and the optional basement AP can be run via ethernet cable to the existing switch.

 

In essence, the basement MoCA adapter's purpose is to provide data to the 2nd floor MoCA adapter which is needed for the 2nd floor AP.

 

Ultimately, my end goal is reliable high speed internet using my existing equipment where possible.  I don't mind spending $s for a splitter as that will help me get to my end goal and is (hopefully) a one time purchase that will last many years.

 

Given my end goal, what's your recommendation for wiring/setup/splitter/etc.?  Again, I'm relatively new to the networking space, am looking for a low maintenance and reliable solution to serve my family's needs.

Future Home network diagram.png

Re: CODA-4582 MoCA 2.0 setup

@rmann2020 can you reboot the modem and post the signal level table again.  I'd like to see the updated signal stats prior to making any recommendation.  At this point I'd say that a 4 port MoCA splitter is in order due to the signal levels.  That drops everything by 8 dB, so your signal levels on the modem would drop by another 5 dB which puts them into marginal territory.  If you have a three port splitter installed now which has a -3.5 dB port and two -7 dB ports, changing to a 4 port splitter would drop the Nextboxes by 1 dB, which isn't much of a difference.  

 

Going to a two splitter configuration would keep the modem signal levels where they are, but possibly drop the nextboxes by another 3.5 dB, which isn't good.  

 

So, the compromise would be a 4 port splitter from what I can see.  If that doesn't work, as in your modem performance drops or you end up with pixelation on the top floor Nextbox, then the next step is to move to the 5 port amplifier as indicated earlier.  

 

The cheap solution is the 4 port splitter.  If that works out, yay.  If not .... move on to the amplifier.  

 

The Antronix 4 port splitter is the MMC2004H-A.

The Holland Electronics 4 port splitter is the GHS-4PRO-M

 

Either one would work.

 

Here's the link for the Antronix data sheet:

 

https://www.antronix.com/pdf/ds-1197-ss-a01_mmc2000-splitters.pdf

 

Here's the link for the Holland Electronics data sheet:

 

http://www.hollandelectronics.com/catalog/upload_file/GHS-PRO-M.pdf

 

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

Updated signal level table after reboot below.  I also made a few other changes in my config that should improve the signal level:

- I moved closer to my future state by moving all the planned equipment to the basement (modem, router, switch)

- I disconnected the basement netbox as it is seldomly used (for now) leaving main floor and 2nd floor netboxes hooked into the -7db ports on my 3-way switch

- connected modem directly to the -3.5db port on the 3-way switch

 

For the recommendation, would it be possible to have 2 recos: (1) with the basement netbox, and (2) without.  Thanks in advance.

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1621000000256QAM8.7001240.366
2633000000256QAM9.2001340.366
3639000000256QAM9.3001440.366
4645000000256QAM9.2001538.983
5597000000256QAM6.400838.983
6603000000256QAM7.100938.983
7609000000256QAM7.9001040.366
8615000000256QAM8.5001140.366
9279000000256QAM4.200137.636
10579000000256QAM6.600538.605
11585000000256QAM4.900638.605
12591000000256QAM4.900738.605
13651000000256QAM9.7001640.946
14657000000256QAM9.8001740.366
15663000000256QAM9.4001838.983
16669000000256QAM9.5001940.946
17675000000256QAM9.4002040.366
18681000000256QAM9.4002138.983
19687000000256QAM9.6002240.366
20693000000256QAM9.7002340.946
21699000000256QAM9.5002438.983
22705000000256QAM9.3002540.366
23711000000256QAM9.2002640.366
24717000000256QAM8.9002738.605
25723000000256QAM9.0002838.983
26825000000256QAM10.1002938.983
27831000000256QAM9.9003038.605
28837000000256QAM10.2003138.605
29843000000256QAM10.3003238.605
30849000000256QAM9.800238.605
31855000000256QAM9.300338.983
32861000000256QAM9.500438.605
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES5.199997
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM35.75033200000
230596000ATDMA - 64QAM33.00016400000
323700000ATDMA - 64QAM31.75026400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - posting table again now that modem has been running all day to see if there is any difference.

 

As I mentioned in my earlier post today:

- I moved closer to my future state by moving all the planned equipment to the basement (modem, router, switch)

- I disconnected the basement netbox as it is seldom used (for now) leaving main floor and 2nd floor netboxes hooked into the -7db ports on my 3-way switch

- connected modem directly to the -3.5db port on the existing 3-way switch

 

For the recommendation, would it be possible to have 2 recos: (1) with the basement netbox, and (2) without.  Thanks in advance.

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1621000000256QAM8.9001240.366
2633000000256QAM9.4001340.366
3639000000256QAM9.5001440.946
4645000000256QAM9.5001538.983
5597000000256QAM6.700838.983
6603000000256QAM7.400938.983
7609000000256QAM8.2001040.366
8615000000256QAM8.8001140.366
9279000000256QAM4.200137.636
10579000000256QAM6.700538.983
11585000000256QAM5.100638.605
12591000000256QAM5.300738.605
13651000000256QAM10.0001640.946
14657000000256QAM9.9001740.366
15663000000256QAM9.7001838.983
16669000000256QAM9.8001940.366
17675000000256QAM9.6002040.366
18681000000256QAM9.7002140.366
19687000000256QAM9.9002240.366
20693000000256QAM10.0002340.946
21699000000256QAM9.8002438.983
22705000000256QAM9.6002540.366
23711000000256QAM9.5002640.366
24717000000256QAM9.2002738.983
25723000000256QAM9.3002838.983
26825000000256QAM10.5002938.605
27831000000256QAM10.3003038.605
28837000000256QAM10.7003138.605
29843000000256QAM10.9003238.983
30849000000256QAM10.400238.605
31855000000256QAM9.900338.605
32861000000256QAM10.300438.605
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES5.300003
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM36.00033200000
230596000ATDMA - 64QAM33.25016400000
323700000ATDMA - 64QAM32.25026400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K

Re: CODA-4582 MoCA 2.0 setup

@rmann2020 looking at your signal levels, they're pretty high, higher than they should be.  Given that fact, you can afford to run a 4 port splitter to drop the modem levels slightly.  That will only drop them another 3.5 dB but, thats better than where they are right now.  It won't affect the Nextbox signal levels.  With that 4 port splitter installed, you should keep a Nextbox connected to it.  If not, then a 75 ohm terminator should be installed on the unused splitter port to prevent any internal signal reflection.  

 

You could also add a forward path attenuator to the inbound cable to drop the downstream signal levels by 6 dB.  That would leave the upstream levels alone, which is ok.    

 

At the end of the day, that would bring your modem downstream levels down to 0 dBmV or close to it.  If the Nextboxes run as they should, all the better.  If you noticed any pixelation or audio issues, then you would simply move the forward path attenuator to the modem cable that runs off of the 4 port splitter.

 

Here's the attenuator:

 

https://www.amazon.ca/line-Signal-Forward-Attenuator-FPA6-54/dp/B07882H96R

 

Here's the 75ohm terminator:

 

https://www.homedepot.ca/product/ideal-f-twist-on-terminator/1001046721

 

 

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - I temporarily added a 2-way splitter off of the -3.5db port on the 3-way with one connection going to the modem and the other the basement netbox.  Updated results below.  Signal strength did go down by ~3.5db as expected.  So looks like the 4-way splitter is the way to go. 

 

Question is whether the attenuator will help or potentially hurt?  (for those who are in the market the attenuator is much cheaper in the US @ 4.50 US vs. Canada @ $20 CDN, assuming you can pickup in US)

 

As for 4-way splitters, there's the Antronix and the Holland.  Which one? (or something else)

 

Antronix:

https://www.amazon.com/Antronix-MMC1004H-B-Splitter-Frontier-Formerly/dp/B07PNJVKQZ

 

Holland:

https://www.amazon.com/Holland-Electronics-4-Way-Splitter-5-1675Mhz/dp/B00OTOEIGK

 

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1621000000256QAM5.3001238.605
2633000000256QAM5.6001338.983
3639000000256QAM5.9001438.983
4645000000256QAM5.8001538.983
5597000000256QAM3.300838.605
6603000000256QAM4.000938.983
7609000000256QAM4.7001038.983
8615000000256QAM5.1001138.983
9279000000256QAM0.700137.356
10579000000256QAM2.900538.605
11585000000256QAM1.300637.636
12591000000256QAM1.800737.636
13651000000256QAM6.4001640.366
14657000000256QAM6.3001738.983
15663000000256QAM6.2001838.605
16669000000256QAM6.1001938.983
17675000000256QAM5.8002038.983
18681000000256QAM5.7002138.605
19687000000256QAM5.7002238.983
20693000000256QAM6.0002338.605
21699000000256QAM5.9002438.605
22705000000256QAM6.0002538.983
23711000000256QAM6.1002638.605
24717000000256QAM5.5002738.605
25723000000256QAM5.5002838.983
26825000000256QAM6.5002938.605
27831000000256QAM6.3003038.605
28837000000256QAM6.8003138.605
29843000000256QAM6.9003238.605
30849000000256QAM6.500237.356
31855000000256QAM6.100337.356
32861000000256QAM6.200437.636
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES1.700001
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM40.00033200000
230596000ATDMA - 64QAM36.00016400000
323700000ATDMA - 64QAM36.00026400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K

Re: CODA-4582 MoCA 2.0 setup

@rmann2020 cancel the 6 dB Forward Path Attenuator.  With the 3.5 dB loss due to the splitter that you added, I'd be happy to leave it at that.  What you can to is to install the splitter on the incoming line between the MoCA filter and the MoCA splitter.  One leg goes to the MoCA splitter, and the other leg should have a 75 ohm terminator on it, as indicated earlier.  You should be able to find that 75 ohm terminator locally.  

 

I'm looking at ports 9 and 10 which cover the frequency range for the DOCSIS 3.1 OFDM channel, which is used for the downstream data.  Where those two DOCSIS 3.0 channels are, with respect to the signal levels, I'm satisfied with where they are at the current time.  The upstream DOCSIS 3.0 channels are ok for their signal levels as well.  

 

So, you can install that two port splitter ahead of the 4 port MOCA splitter, or if you're really keen, you could install a PPC FPA3-54 forward path attenuator in place of the two port splitter.  The final signal levels will be very near the same.  I don't know if you would be able to find a 3 dB forward path attenuator such as the PPC FPA3-54.  

 

something like this:

 

Incoming ->   MoCA   ->   2 port     ->   75 ohm terminator 

  cable              filter            splitter    ->   4 port splitter   ->  upstairs Nextbox

                                                                                                 ->  main floor Nextbox

                                                                                                 ->  basement Nextbox

                                                                                                 ->  basement modem

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around
@Datalink - I found a few 3db attenuators on Amazon. Would any of these work?
https://www.amazon.com/3db-Coax-Cable-Attenuator-each/dp/B0013L69D2
https://www.amazon.com/gp/aw/d/B0002ZPIUU

Any recommendations on the splitter - Holland or Antronix?

Re: CODA-4582 MoCA 2.0 setup

Yup, they would work.  I'd probably choose the first one from Holland Electronics.  You can use that instead of the two port splitter.  Either 4 port splitter works as well.  The Antronix ports are -7 dB while the Holland Electric ports are -7.7 dB, so not much difference.  Rogers uses Antronix splitters so if you want to go with that one, thats fine.   

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around
@Datalink - the first 3db attenuator didn't mention forward path. The 2nd one in my now edited post does in the Q&A section. You responded so quick you likely didn't see my edit. Sounds like the first one is fine though. Thanks again for all your feedback and knowledge sharing. I'll go forward with my order and report back later in March once I've received and hooked up all the newly bought parts.

Re: CODA-4582 MoCA 2.0 setup

Ideally if you could find a 3 dB forward path attenuator that would be ideal, but, where your current signal levels are, a regular 3 dB attenuator would do.  I had a look at both attenuators, both would do, I'd go with the Holland Electric attenuator myself.  

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - I finally got all the hardware today... but am a bit confused on the hookup.  Should it be:

 

                                                                                   -> MoCA Adapter -> Nextbox on second floor

incoming -> MoCA -> Attenuator ->  MoCA     -> Nextbox in Family room

cable              Filter                                 Splitter    -> MoCA Adapter -> modem in Basement

                                                                                   -> Nextbox in Basement

 

Re: CODA-4582 MoCA 2.0 setup

@rmann2020 yup, that looks good.  Post the modem signal levels when everything is up and running. 

 

Make sure that you log into the adapters and select D-Band High, so that the adapters stay out of the way of the Nextbox Whole Home.  You're running Whole Home correct?  Don't remember all of the details and don't have time at the moment to reread everything.  

 

If you don't have Whole Home running, then you can select the D-Band.  There should be a selection for that in the adapter settings.  Also enable the privacy setting by entering a number or alphanumeric sequence into the privacy setting.  Not sure what those adapters use, but it should be one of the two. 

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - I'm having trouble logging into the adapters.  The provided quickstart guide is pasted below.  I can't seem to figure out what IP address to use.  My current setup has ethernet from my router going to the gocoax adapter but I can't see the adapter in my router devices and therefore can't figure out the IP.  Any suggestions?

 

Log into the management web

Step1: Power on the device.

Step2: Configure your PC's IP address to 192.168.254.x, for example, 192.168.254.10. Connect the device to the PC via ethernet cable.

Step3: Log into the device's web by http://192.168.254.254, username: admin, password: gocoax

Step4: With the managment web, you check the current configurations and monitor the device status.

Re: CODA-4582 MoCA 2.0 setup

Hi @rmann2020 no problem. 

 

1.  First you need to disconnect your pc from the router.

2.  Then, on the pc, navigate down to the ethernet adapter IP settings. 

      That is located in Start .... Control Panel .... Network and Sharing Center. 

      Select "Change Adapter Settings" to bring up the Network Connections panel. 

      Right click and select Properties to bring up the the Ethernet Properties panel. 

      Select  "Internet Protocol Version 4 (TCP/IPv4).  Select Properties just to the right side

      below that to bring up the Internet Protocol Version 4 (TCP/IPv4) Properties panel. 

      Select "Use the following IP address" and enter 192.168.254.10

      Hit OK at the bottom and reboot the pc.

3.  While the pc is rebooting, turn off the power on the adapter and connect the pc to the

     adapter. 

4.  Power up the adapter

5.  Log into the adapter by bringing up a web browser and entering 192.168.254.254

     That should take you to the adapter log in page where the following credentials

     should work: username: admin, password: gocoax

6.  Navigate to the management pages to change the user name and password, then select

     the required D-high (?) Band selection and set the privacy code as well.  Save the

     changes.  You should be able to power down that adapter and then rerun the same

     sequence with the other adapter.  

7.  When the next adapter is done, power it down and consider checking the first adapter

     once again, to confirm that selected username, password, D-Band setting and privacy

     code are as you set them.  Kinda like the measure twice, cut once type of idea.

 

When the adapters are set to go, consider running a speed test with the adapters connected with a very short coax cable.  That will tell you the max data rate that you can achieve with your internet data rate, the router and then the adapters connected with a very short cable which should be a no loss cable situation.  From there, when the adapters are in place, where you intend them to run, you will have an original test result that you can compare  with.  That test configuration would look like:

 

modem -> router -> ethernet -> adapter 1 -> coax -> adapter 2 -> ethernet -> pc

                                                                                 (very

                                                                                 short)

 

When you're done with the testing, you will need to navigate back down to the pc's Internet Protocol Version 4 (TCP/IPv4) Properties panel where you would select "Obtain an IP address automotically".  Hit Ok at the bottom and then reboot the pc and reconnect the pc to your router.  

 

Install the adapters in their intended locations.

 

Done 🙂

 

I think that should do it 🙂

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - I figured it out as you typed your response.  Found an old windows laptop to use. 

 

Based on the below screenshot, would I simply uncheck D-Ext and D-Low?  (leaving only D-High checked)

 

Also, what privacy code should I be using?

 

screencapture-192-168-254-254-index-html-2020-03-15-21_31_36.png

Re: CODA-4582 MoCA 2.0 setup

If you have Whole Home running, then select D-High to prevent any interference with the Whole Home MoCA network.

 

As for the privacy code, its a random number or character entry, your choice, just have to make sure that both adapters are set to the same sequence.  Does the adapter privacy page indicate whether the privacy sequence is numeric or alphanumic?  Looking at an old Actiontech MoCA adapter config guide, the setup page indicates a 12 to 17 digit entry.  From what I remember, there isn't any guidance in the MoCA specification as to what is used for the privacy code, so I would assume that companies are free to do what then want and use whatever encryption method they choose.  That's going to take a little experimentation.  If you enter an alphanumeric sequence for example, 3aUKSYpsOOElaz1C, if the adapter doesn't like the combination of numbers and characters, hopefully it will give you a rejection  warning of some type, in which case, go with plan B, a series of random numbers.

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around

@Datalink - Update, I finished the suggested short run test after updating both adapters (will do the privacy setting after) by only checking the D-High checkbox (D-Low and D-ext unchecked).  Speedtest results from fast.com using the shortrun and permanent location yielded the same results.

 

That said, I slightly updated the config of the basement adapter as it wasn't working in the original config posted.  It makes me think that I may be better off with a 3 way splitter ??

 

Here's the new config:

 

 

                                                                                    -> connected to the TV out from the basement MoCA Adapter

incoming -> MoCA -> Attenuator ->  MoCA     -> Nextbox in Family room

cable              Filter                                 Splitter    -> modem in Basement

                                                                                   -> Nextbox in Basement

 

 

Network cables:

modem in basement -> switch -> router -> Basement MoCA Adapter 

 

Basement MoCA adapter coax:

basement MoCA Adapter -> MoCA -> second floor MoCA adapter (coax) -> Nextbox on second floor via TV out coax

                                                -> TV out current goes back into 4 way MoCA splitter in basement (but I don't think this is needed)???

 

 

 

Updated modem signals below:

 

DOCSIS Overview
Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1603000000256QAM1.800938.605
2597000000256QAM1.700837.356
3609000000256QAM2.3001037.356
4615000000256QAM2.6001138.983
5279000000256QAM-2.200137.356
6579000000256QAM-0.900535.780
7585000000256QAM-0.100636.175
8591000000256QAM0.700736.610
9621000000256QAM2.6001238.605
10633000000256QAM2.9001338.605
11639000000256QAM3.2001438.983
12645000000256QAM3.0001538.605
13651000000256QAM3.6001638.983
14657000000256QAM3.8001738.605
15663000000256QAM3.5001838.605
16669000000256QAM3.6001938.605
17675000000256QAM3.3002038.605
18681000000256QAM3.3002138.983
19687000000256QAM3.3002238.983
20693000000256QAM3.4002338.605
21699000000256QAM3.2002438.605
22705000000256QAM3.1002538.605
23711000000256QAM3.2002638.983
24717000000256QAM2.7002737.636
25723000000256QAM2.9002838.605
26825000000256QAM5.1002938.605
27831000000256QAM4.7003037.636
28837000000256QAM4.5003138.605
29843000000256QAM4.2003237.356
30849000000256QAM3.800237.636
31855000000256QAM3.100337.356
32861000000256QAM3.800437.636
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES-1.099998
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM41.50033200000
230596000ATDMA - 64QAM38.75016400000
323700000ATDMA - 64QAM38.00026400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K

 

***Edited info: Keep personal info private. 

Re: CODA-4582 MoCA 2.0 setup

@rmann2020 please delete the data for the:

 

IP Address

Gateway IP Address

Re: CODA-4582 MoCA 2.0 setup

rmann2020
I plan to stick around
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Re: CODA-4582 MoCA 2.0 setup

@rmann2020 here's what I had imagined for the coax network, from your posting earlier today:

 

                                                                                   -> MoCA Adapter -> Nextbox on second floor

incoming -> MoCA -> Attenuator ->  MoCA     -> Nextbox in Family room

cable              Filter                                 Splitter    -> MoCA Adapter -> modem in Basement

                                                                                   -> Nextbox in Basement

 

 

So, slightly expanding on the splitter connections:

 

                    - port 1->  coax cable run upstairs -> MoCA Adapter -> coax -> Nextbox on 

 MoCA       - port 2 -> coax cable -> Nextbox in Family room                           second floor

Splitter       - port 3 -> coax cable -> MoCA Adapter -> coax -> modem in Basement

                    - port 4->  coax cable -> Nextbox in Basement

 

In this case both MoCA adapters use the TV output port to support the connected device.

 

Looking at your chart, it looks like you have the configuration set this way, if I'm interpreting this correctly:

 

                    - port 1->  MoCA Adapter -> cable run upstairs -> MoCA Adapter -> coax ->

                                                   Nextbox on second floor

 MoCA       - port 2 -> Nextbox in Family room

Splitter       - port 3 -> modem in Basement

                    - port 4->  Nextbox in Basement

 

So, in this case, with the first gocoax adapter in the basement, you're connecting the tv output to the cable that runs upstairs and then connecting that to the second gocoax adapter .... and then using the tv output of the second adapter to connect to the nextbox upstairs.  Do I have that correct?

 

The ethernet connections look something like this at the present time:

 

modem -> ethernet -> router -> basement -> coax run -> 2nd floor -> ethernet to device

                                                             adapter                              adapter

 

Were you running into problems with the original configuration indicated above?  

 

I can see a possible issue with the 2nd floor Nextbox as you're going thru 2 adapters, which might be possible, but, consider the possibility that you might see less than ideal video and audio output of the 2nd floor Nextbox.  The thought of running the two adapters on a single cable run never occurred to me as that's probably not a typical installation.  Usually the installation is one adapter per cable run.  In theory, if you were only using the run for ethernet (via coax) purposes, this would probably make a lot of sense, but, I don't know if the 2nd floor Nextbox will be happy with that configuration. 

 

I'm still trying to figure out what you mean by the second statement below:

 

 

Basement MoCA adapter coax:

 

basement MoCA Adapter -> MoCA -> second floor MoCA adapter (coax) -> Nextbox on

                                                                                                                                          second floor

                                                                                                                                          via TV out coax

                                                -> TV out current goes back into 4 way MoCA splitter in

                                                     basement (but I don't think this is needed)???

 

What exactly to you mean by " TV out current goes back into 4 way MoCA splitter in basement (but I don't think this is needed)???"

 

From what I can see, both TV outputs of the adapters are used.  The basement adapter TV output feeds the cable that runs upstairs to the second floor.  The second floor TV output feeds the 2nd floor nextbox.  So, I'm a little confused by your statement about the TV out.

 

Food for thought.  It might not be advisable to run one adapter to another using the TV output of the first adapter to feed the cable input of the second adapter.  I suspect that their not designed to work in that fashion and I wouldn't doubt that the TV outputs have a reduced frequency range while the cable ports would use the entire frequency range.  That's a rather interesting question.  You should either contact gocoax directly to see what they say, or you could sign up for a freebie account at SNBForums and post a question to the following forum:

 

https://www.snbforums.com/threads/gocoax-moca-2-5-adapter.59499/

 

Either way, I'd go looking for an answer if I was going to leave the adapters connected in their current fashion.  

 

Hopefully I've understood your configuration correctly.  Please correct me if I'm wrong.

 

Edit:  In order to connect two MoCA adapters together via coax cable run, you would normal use the cable inputs of both adapters.  That would leave the TV output ports disconnected from anything else.  In that configuration the adapters could use the entire D Band, or D-Ext as indicated in the setup.  

 

 

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