Broadcast from a computer to several TVs via a coaxial cable, what hardware?

Question

Cables and wires

There is a computer and several TVs to each of which a separate coaxial (antenna) cable comes from the computer. Prompt the device and the program to start broadcasting video from the computer to these TVs via a coaxial cable, so that the TVs find this broadcast as a channel from the antenna. Televisions of varying degrees of intelligence, from old to modern.
Thank you.

Answer 1

And there is no way to put on AV? It would be easier. There are adapters from coke ... You
can dilute with ordinary or active splitters as for a TV antenna
. On the board you need a board with av / tv output, and drive any video stream into it with software. The same obs, if the software is not included with the board

Answer 2

Isn't it easier to separate via HDMI?
And the picture will be better and there will be fewer problems.

Televisions of varying degrees of intelligence, from old to modern.

Here, too, via HDMI only with an adapter from RCA to HDMI.