Free to air channels thru foxtel dish, can I grab the signal ?

The previous owner here had foxtel and the crappy television aerial
and cabling is ancient and only gives a poor signal.

I don't want to subscribe to foxtel but am wondering if I can still
use the dish (it's still installed but obviously no decoder box) to
receive the free to air channels?

Or are the free to air channels encoded onto a dedicated foxtel signal
only?

Cheers.