Hi Mark & welcome to beworld.
B&O still sell the "V" - sometimes call rabbit ear - antennea. Or you can attach a (ugly) ribbon type or even better an external one of any make & model.
You will need an antenna to tune in the FM stations, even a bit of wire stuck in the hole will do for this in my experience.
Chris.
The use of metaphors should be avoided like the plague. They're like a red rag to a bull to me.