I have a friend with Fios and a traditional modem/router setup. Part of the house is getting poor signal/download speeds over wifi and wants to alleviate these problems. They have an extra router, and extra Arris Surfboard 6141 modem as well.
In the main room that they want to get better wifi, there is a coax wall outlet. My question is, would it be possible to simply plug in the extra modem/router hardware into the coax, and have a 'second' network? If the modem will not be helpful, would using the router as a repeater be worth trying to extend the wifi signal? If that is not possible, would purchasing a Moca router or adapter be required? Looking for any advice, but I am also trying to avoid purchasing new hardware when at all possible.
Thanks!