Coaxial to Ethernet coversion and back again?

[maestro416]

I want to setup my digital tv in the basement, but running coaxial cable to the place I want the tv is difficult. I do already have a cat5 ethernet cable there, and was wondering if it would be possible to convert from coax to cat5, and then back to coax to go into the digital cable box.

 

[americanaudiophile]

There are adapters like this one
http/www.amazon.com/Muxlab-Video-Adapter-BALUN-500302/dp/B00195YG00