coaxial to ethernet adapter help

[Alexx Jaxon]

i have the technicolor EPC3940ADL modem/router

i'm wanting to upgrade and get a new one but my problem is that the current modem gets it's internet by coax cable. all the modems i'm wanting to get are connected by ethernet

i've found a few adapters on ebay like
https://i.imgur.com/eFC42hc.png
but i'm not sure if it will work or bottleneck my network speed.

 

[smashjohn]

you have to get something approved for use by your cable company. Do a google search for Cable Modem Approved By Cox, TimeWarner, Comcast etc. This should point your towards compatible devices. Mine said "Approved for use by Comcast" right on the front. Half of the devices firmware will be controlled by your cable company. no getting around it.

 

[Alexx Jaxon]

you have to get something approved for use by your cable company. Do a google search for Cable Modem Approved By Cox, TimeWarner, Comcast etc. This should point your towards compatible devices. Mine said "Approved for use by Comcast" right on the front. Half of the devices firmware will be controlled by your cable company. no getting around it.

would somthing like that do the trick?

https://www.amazon.co.uk/dp/B007G5T10W/ref=psdc_949408031_t1_B00ENRZCKO

 

[bill001g]

This is like saying I go to the gas station and the diesel fuel pump will not fit in my gasoline powered car. I am going to get a adapter to make it fit.....but most people know the car will not magically be able to run diesel fuel if it is designed for gasoline.

The problem is not converting ethernet cable to coax. The problem is the way the data is transmitted is completely different on coax and ethernet. That is the whole reason cable modems even exist, their only real purpose is to translate from one media type to another.

I suspect your problem is you do not know the difference between a router and a modem. Some device combine the function so a single hardware box can do both. The devices that only have ethernet as their WAN port are routers and need a seperate modem to do the media conversion.

You can not just buy some silly coax to ethernet coverter you must have a modem that is on the list approved by your ISP. You can then connect any router you want to that modem.

 

[smashjohn]

you have to get something approved for use by your cable company. Do a google search for Cable Modem Approved By Cox, TimeWarner, Comcast etc. This should point your towards compatible devices. Mine said "Approved for use by Comcast" right on the front. Half of the devices firmware will be controlled by your cable company. no getting around it.

would somthing like that do the trick?

https://www.amazon.co.uk/dp/B007G5T10W/ref=psdc_949408031_t1_B00ENRZCKO

Nope. Like bill001g said, you need a modem. The cable side is running on multiple frequencies (channels) that the modem needs to lock into. I think mine locks into 16 different channels. The Modem has to be authorized on your cable companies network or it won't be able to connect at all; this is done by registering the serial or mac address with your cable provider. You have to call them and provide them information off of your modem before it will do anything at all. They literally control the firmware and will determine what version of software the modem runs. There are areas of the modem that you can't access.

What you're looking at is totally different. People run all kinds of things over CAT cable. USB, HDMI, Coax, VGA, Audio, etc. CAT cable is a high quality low voltage data cable delivery medium. Depending on what you're doing and the cable specs required you can find convert anything to CAT. But just because you run something over CAT cable, doesn't make it ethernet.

You'll need a modem to do what you want. Good Luck!