Sure.
In orbit backup in case of main satellite related failures (IS 20). There have been a few temp. issues with IS 36 though, not aware of any with IS 20, so sort of has worked in reverse lol.
(Best I don't detail what any failures were, not sure what's considered confidential.)
BTW, most channels end up in Randburg first, then have ads inserted, then that's uplinked to our sats.
The Spanish uplink "farm" is more for UK related channels, I presume it's cheaper. No idea how they insert ads in that case, but those channels go straight up to our birds, don't come to Randburg first. I presume the farm has MC encryption units on site.
Lastly for anyone unfamiliar - our sats. are only used for southern African countries (except Mozambique) , most in Africa use other sats. they have for that. I think there's now 3 sats. involved there, would think probably as there's lots of extra regional channels involved in all the many countries.
We are within that other group of satellites' signals footprint in northern SA though, I used to tune in from Jo'burg.