Extending Wired Network Connectivity

Does anyone know of a a way to extend Internet connectivity on a Cox Contour setup to another coax location without:

1. Moving the Modem and Router

2. Running an Ethernet cable to the location

3. Using WiFi

With Verizon, I simply was able to setup a 2nd Actiontec router as a bridge and/or use an Actiontec MOCA device by plugging into the existing Coax at that location and connecting the computer's ethernet cable to the Actiontec device.

Seems with Cox, I have lost that ability and would like to get "wired" back up.

I have searched and searched without any success. Just wondering if I'm stuck???