just completed an extension where the electrician has two coax cables coming from Hub to beside tv.
can I use one as coax as normal and use other coax as Ethernet with correct fittings? so I do not have to go wireless?
Or cani buy a coax to Ethernet adaptor?
Just a pity you had not thought about it in advance you can pick up extra long Ethernet cables for as little as £6 on EBay. Checked your original question on Google it can be done but the first adapter I found on Amazon comes in at around £60. Is there no way you can simply feed an Ethernet cable through where the coax runs. ?
Forget about a converter, they at best run at 10 base T, or 10MB per second. A cat5e cable typically uses 100 Mb per second and over short distances higher performance is not untypical. You would be better of scrapping the unused cable and simply use the 5.2 GHz WiFi connection between the V6 box and the superhub rather than wasting money. You may want to check that the coax that you electrician has installed is digital quality and not RF quality as someone has no idea of what is required for a V6 box, has for example the cable been terminated with bayonet or push fit connectors.
You can't learn anything from a mistake until you admit that you've made it.