Can Ethernet between gateway and receiver box work for TV signals?

Assuming your receiver has an Ethernet port, yes. This is how I connect to my DVR.

@jimphipps0427 - You are talking about the connection from outside to the RG - from the NID to the RG.

There are a couple of speed bumps to be aware of.

I believe COAX & cat5 connect to different components in the NID. Yours may have just the one for COAX.

If you have TVs connected COAX the are connected with a diplexer & splitter. You will want to change the RG side of the diplexer to he splitter input to eliminate the diplexer.

Make sure you use the correct input on the RG.

Hard to tell if you are talkingabout the main fee from outside ( covered above) or RG to TV feeds.

Any STB/TV can be fed from the RG. In fact it is prefered. The only speed bump is do not mix TV & internet on the same feed vbecause it could cause flooding of the switch - be sure to use a gigabit switch.

I have this netwwork. Why not be careful & keep yours? works fine! doesn't it?

As @ApexRon recommends, the DVR to RG should be cat5.

No.  I am talking about the coax that is currently coming from a box on the side of my house and burried under my patio.

I can easily run an Ethernet cable from the AT&T Gateway to the AT&T channel box by my TV.

I just know there is an Ethernet connection on that box and was hoping to replace the coax cable with Ethere net, in case the coax cable gets cut during a remodel of the patio.

Thank you

jimphipps0427

Jim,

Somewhere out in the street you should see what it referred to as a pedestal like in this picture:

From the pedestal to the side of your house should be underground armored cable containing two twisted pair wires. On the side of your house you should have a NID that looks like this:

Where that red circle is you can gain access with a screwdriver. The twisted pair telco cable comes from the street to here and then your house wiring, also twisted pair telco cable, originates here. Coax is traditionally cable company.

While I highly recommend Cat 5e/6 to be run in your home, I am not certain if RJ would be compatible as some NID may predate. You have to look for yourself.

I'm thinking the OP has an iNID, an i3812, mounted on the outside of his home.  When most of these were installed, the only approved way to distribute television was via HPNA and Coax.

However, there is an Ethernet Jack and it can work.  However, it must be enabled using the web Interface (via a connection through the 38HG).