Not a splitter no.
You can buy an indoor aerial from Bunnings ($20 or so) and give that a try. Unlike analogue digital can give you 100% PQ even if the reception is low. The downside is if the reception is too low then you get 0% PQ.
So try it out and return it if it doesn't work. Make sure you test each network when seeing if you can get all channels.
Thanks, Peter the indoor antenna didn't work, already tried that. :(.
Telstra has done the splitter thing in past at a different property but I am not sure what the purpose was.
I guess I have to run a 6-8m cable from another room.
I think you'll find that Telstra split the cable for use with other cable services. The cable you're talking about carries both internet signal and the Foxtel signal and as such can be split and used on a Modem and Foxtel box. You could split your cable as well and plug that into the Fetch TV box but it simply wouldn't do anything because it wouldn't be sending it the free to air signal it needs to operate.