Freeview receives data on the same 4 core broadcasts* that were used for analog, and in fact, freeview channels remain mux'ed in a way that BBC produced content is isolated to the 2 muxes that correspond to the old BBC1/BBC2 split.

So yes, it's still perfectly easy to find the Intermediate Frequency oscillator for a freeview receiver.

* During the analog/digital crossover period, the DTV signals were, obviously, at an offset from the associated analog UHF channel, since analog and DTV could not physically occupy the same frequency, but the fact remains that the DTV muxes were associated with one of the 4 existing channels (Ch 5 didn't have an associated DTV mux afaik)

edit:

here's a list of the mux allocations, you'll notice that all BBC programming is allocated to the BBCA and BBCB muxes, even though there's more than 4 overall muxes available these days.