Coax over Ethernet?

[nero44]

Hello Everybody,

as the title suggests... I know there are tons of videos/tutorials, explaining how you can re-use existing coax cables in your house as ethernet connection, but I am looking to do the reverse...

Background:
I want to split my antenna signal and have one end go to my TV and the other end to the kitchen into a "multimedia" wall unit that can also play radio. A year ago I laid two ethernet cables under my floor to a a reachable location, one of them in theory could be a spare. Is there a way to use this existing ethernet run for a coax/antenna signal? Or do I need go ahead and lay a dedicated coax cable for this?

 

[spile]

Not possible - use new coax but given the move to IP, I would look in that direction.

 

[pete01]

Worth a try for 7 quid?

 

[endecotp]

Worth a try for 7 quid?

They might kinda work for something like CCTV, but I’d be amazed if they worked for a TV aerial signal.

(If you do try, please let us know what happens!)

 

[spile]

You will need a balun. AI did a better job than me to show why this won’t work…

“Using a network cable for RF signals fails primarily because of a fundamental mismatch in physical architecture and electrical properties. Coaxial cables are "unbalanced," using a single shielded conductor to trap high-frequency waves, whereas Ethernet cables are "balanced," using twisted pairs that lack the necessary shielding to prevent high-frequency RF from leaking out or picking up interference. This results in extreme signal attenuation (loss of strength) and an impedance mismatch (75 Ohms vs. 100 Ohms) that causes the signal to reflect and distort. Without an active "Balun" or powered extender to transform and amplify the signal, a simple passive adapter cannot bridge the gap between these two different transmission methods.”