Hallo Sveifors !
I have a 7007 original, and the FM antennae I received with it was very simple. A plug socket and 2 wires.
The Rabbit Ear antennae mentioned above is somewhat better, but a powered or amplified antennae is better yet. I really depends where you are located, and how strong the FM signals are near you. A small powered antennae such as a Terk can be hidden away and not detract from the 7000 design which the Rabbit antennae will do.
I ended up trying both over the years, and could not stand the look of the Rabbit Ears. I inverted the antennae ( V reversed and pointing downwards to /\ ) which worked fine, and did not detract from the design.
Since the advent of .M-Link, N. RADIO, and Beoport, I do not use it much these days. Still, a fine piece of equipment !