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Old 09-24-2022, 11:54 AM   #1
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Ethernet to Coax to Ethernet

Has anyone found any adapters that will allow the connection sequence in the subject line? My existing internet connection is via cable which is already wired via coax, so I would love to use this to carry my starlink signal. To do this I would need an ethernet to coax, and a coax to ethernet adapter.

I seen some adapters on amazon but not sure if they are good for the job.

Thanks!
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Old 09-24-2022, 11:58 AM   #2
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I think you would need something like this to do that.

https://a.co/96e4QMO
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Old 09-24-2022, 12:08 PM   #3
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Quote:
Originally Posted by nvs4602 View Post
I think you would need something like this to do that.

https://a.co/96e4QMO
K, what about from coax back to ethernet?
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Old 09-24-2022, 12:43 PM   #4
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I use these ....
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Old 09-24-2022, 01:03 PM   #5
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I believe the device(s) your are looking for all referred to as MOCA adapters & are sold in pairs. Coax to Ethernet on one & Ethernet to coax on the other. In its simplest form, this type of device should satisfy provide you with what your post requested.



With Starlink thrown into the equation you need to be aware their Ethernet connections (without the additional Ethernet adapter on the Gen 2) provided have a proprietary wiring. In addition to that adapter, it's most likely you will need a router and/or a switch to assist in the managing of the Ethernet/coax cabling.



I suspect what you want to accomplish can be achieved. It would be to your advantage to understand the hardware you presently have & its limitations. Each time you make a wired connection, you are introducing a possible point of failure if there are compatibility issues.



Somewhere in the mix I suspect there is a cable modem which manages the input signal from coax & outputs it on Ethernet.


Safe travels.
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Old 09-24-2022, 01:42 PM   #6
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Quote:
Originally Posted by lemodrop9344 View Post
I believe the device(s) your are looking for all referred to as MOCA adapters & are sold in pairs. Coax to Ethernet on one & Ethernet to coax on the other. In its simplest form, this type of device should satisfy provide you with what your post requested.



With Starlink thrown into the equation you need to be aware their Ethernet connections (without the additional Ethernet adapter on the Gen 2) provided have a proprietary wiring. In addition to that adapter, it's most likely you will need a router and/or a switch to assist in the managing of the Ethernet/coax cabling.



I suspect what you want to accomplish can be achieved. It would be to your advantage to understand the hardware you presently have & its limitations. Each time you make a wired connection, you are introducing a possible point of failure if there are compatibility issues.



Somewhere in the mix I suspect there is a cable modem which manages the input signal from coax & outputs it on Ethernet.


Safe travels.
I have the starlink ethernet adapter. I assume I'll have to wire as follows:

SL to ethernet adapter -> ethernet to coax device -> coax to ethernet device -> wifi router. Thanks!

PS this is almost to the point of sounding to complicated to solve what should be a simple solution.
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Old 09-24-2022, 07:26 PM   #7
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Originally Posted by rfg9585 View Post
I have the starlink ethernet adapter. I assume I'll have to wire as follows:

SL to ethernet adapter -> ethernet to coax device -> coax to ethernet device -> wifi router. Thanks!

PS this is almost to the point of sounding to complicated to solve what should be a simple solution.

Short response is.... it may work or it may not work. On the surface I would land on the side of; it probably won't work as you described.
Typically when your ISP provides internet via coax to your home, there is a modem involved which converts the coax feed to Ethernet. This device may or may not incorporate a router of some sort (could be WIFI, Ethernet or some combination of both). The router controls the distribution of the internet signals to the devices in your home. Typically router output to the devices it supports is done by Ethernet.
That is why I suggested you understand what sort of equipment you presently have & what it does & does not support. Do you have a stand alone router which has an Ethernet cable from the coax modem?

I'm not trying to make this overly complicated, but I have seen a bunch of folks go out and buy devices they think will solve their issue only to find out it doesn't work as they anticipated. Yes, I would suggest it's a little more involved than simply buying some MOCA adapters.

If you have multiple devices which require internet service, a router (wired or WIFI) will almost always be required unless you only connect one device at a time to the internet.
If you want to use multiple internet sources like cable & Starlink concurrently, you will need a router that supports multiple WAN (internet) sources (in this case Starlink & cable).
Please understand, others may have a better or more informed opinion than I do. I'm only stating what I believe to be correct based on the home & RV networks I've set up over several years. I am by no means a network engineer, just a hobbyist that likes to play with technology.
With all that said, it might be a good idea to go to the Stalink forum to see what those folks have to say.
Good luck & safe travels.


PS: Used to live in Concord, NC.
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Old 09-24-2022, 10:17 PM   #8
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Would Ethernet over power lines be suitable for your application? There are lots of options if it would.
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Old 09-25-2022, 06:50 AM   #9
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If it could work, how much additional latency will be introduced because of unintended impedance matching?
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Old 09-25-2022, 07:27 AM   #10
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fyi - plan to totally remove cable ISP out of the loop, disconnecting modem and their feed from street. Just want to hijack the coax and use it since it is already wired.

totally forgot about ethernet over power lines option. I never got into this while at work so how do you suggest it could be leveraged?

In the end, if none of these options would work I'd just fallback to a plan to somehow wire and setup the native wires to my home router. But this could get to be a difficult option for my configuration.
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Old 09-25-2022, 08:57 AM   #11
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Let me see if I understand the proposed configuration.
Your primary source of internet will now be Starlink (yes/no). You are eliminating your current ISP (yes/no). You have multiple devices in your home that will need access to the internet (yes/no). You have an existing router with Ethernet WAN (internet signal incoming) port(s) & Ethernet LAN (internet signal outgoing to devices in house) port(s) (yes/no). You want to use existing coax wiring in your house to distribute these signals (yes/no/why).
Assuming the response to these questions is yes; you will need to install the Starlink Ethernet adapter into your router. There is a process you will need to go through on the Starlink user interface to set this up. You may or may not require a switch between the Starlink device & your router (a common issue due to the various chips set utilized by various manufacturers).

Prior to going any further with your LAN, I would establish you have a viable internet connection with your primary PC via Starlink. This PC should be connected to your router via an Ethernet cable to eliminate issues associated with WIFI.
Assuming you have progressed this far & you can access the internet, you have a decision to make on how you want to distribute the internet signals to the various devices within your house.
IMHO trying to use MOCA adapters to distribute internet signals to multiple devices is an interesting exercise, not one I would encourage you to pursue. I suspect each device on the LAN would require a set of MOCA adapters coming out of the Ethernet port on the router and or switch. Aside from the expense, this adds a layer of complexity most people would prefer not to deal with.
I would really encourage you to consider the distribution of the internet signal via WIFI.
For those advocating the use of POE, please advise the OP how this might be a viable solution.

Again, I'm offering advice based on what I've experienced over the years. As stated previously, I am not a network engineer.
I'm not trying to be critical, just trying to help.
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Old 09-25-2022, 09:00 AM   #12
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why not just use a wifi mesh network?
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Old 09-25-2022, 09:05 AM   #13
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Yes I am looking to change my home source ISP to starlink and use existing infrastructure , including the coax that goes to my home router. This is where I need to have an interface that allows me to utilize the coax wiring to the router. If this won't work using the devices mentioned above, I will just go to plan B and feed the home router with the SL signal directly using their adapter of course. Doing this I will have to determine a different location in my home for setting all this up because I can't run cables like the pros did thru my house.

I also want to make this setup portable, so I can detach SL and move to my RV when we travel and replace SL home with a Visible setup.
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Old 09-25-2022, 09:09 AM   #14
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why not just use a wifi mesh network?
I have this setup in my home from the home based router\wifi, just trying to change the source to SL with existing cable. May not be best solution, which is reason for my post.
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