Years ago, when I built my workshop at the bottom of the garden 20m from the house, I put an unscreened 25 way multicore cable (16/0.2mm) for future expansion. Now I would like to extend the computer network down there and there is no way to get an ethernet cable down the same duct.
I have a number of space cores in the multiway but they are not twisted pairs. Do I have any chance of getting a few mb/s bandwidth down that cable? This would be for file transfer, emails and light browsing The other occupants of the cable carry either DC or phone line or are floating.
I'm currently using homeplug units but the performance varies from OK to unusable from day to day, hour to hour. Too far for standard wifi.
TIA
Bob