The QPF-031 is the C120 flange lnb. It can be used with feedhorn designed for a prime focus dish. In fact, I believe they actually sell one to be used with it (ADF-120). So, basically the answer is In theory yes. I say "in Theory" because getting this dish (Fortec 1.6m) to work well on Ku will require very good alignment of the focal point of the feedhorn and proper adjustment of the scaler ring. Otherwise you might get lots of sidelobes. Also, I don't know how good the surface accuracy of these dishes are and how well they hold their shape since they're pretty much made of tinfoil. Also getting the petals aligned perfectly during assembly might be crucial as well. Anyway, if you can get the surface of the dish to be true and accurate and have it retain that shape and not bend in the wind and if you make sure the feedhorn in properly aligned at the focal point, then you might have a pretty decent performing Ku dish.