It seems to me that the AOR loop is a product in search of an application. One wonders how well it can manage the specified range up to 500 MHz. It does appear physically challenged for LF..And yes, the term "magnetic"... It's something I need to read up on again, but from what I've learned so far from theory and experience is that a tuned loop actually has a very high impedance (unloaded), and great sensitivity to nearby objects. It is almost the ultimate short dipole
Now, a ferrite rod antenna is a different animal. It's cross section is increased due to the high magnetic permeability of the core. More nearly a "magnetic antenna"? But what about an air core multi-turn loop?
Sorry for the topic drift