[codefox1]

Well, unless this is a very unusual loop, the most you would ever need to turn it would be 90 degrees, and some in between compromise might work out OK for the stations you want to hear. Anyway, a rotater could be as simple as an appropriate length of coat hanger anchored to a non conducting portion of the loop mechanism and exiting the cabinet through a very small hole in the side and perhaps equipped with a small knob or plastic piece or whatever to do the adjustment.

Even easier, if there is a provision for an external antenna on this set, 10 or 15 feet of wire might just be good enough. Like everything, it depends.