why no output rf output from Thomson dc162upc?

I have a thomson dc162upc rental , I have no output from
the rf output socket. only on the scart lead.
I have phoned my rental supplier and they have informed me that the rf output is in operative , this means I cannot watch the bbc in one room and pay tv in another room.

is this so, seems odd to have an rf o/p , they say my only
way round this is to rent a second box.