If it is like my BV8-32 then:
- one plug is for digital TV reception (our Freeview in Oz)
- the other plug is RF output (analogue I believe), but I have had no success in getting this relayed to my non-B&O TVs nor my Elgato EyeTV
First B&O (1976) was a Beogram 1500 ... latest (2011) change has been to couple the BL11 with the BL6Ks *sounds superb*