Go read the original post. I clearly asked which was better, an air core inductor or a ferrite core of the same size . The answer should be yes this and not that, but you don't have any idea. You are just a bozo. .
Well, I'm directing the question to you since you seem to know everything. And BTW, I worked in a radio factory and adjusted maybe 1000 antenna loopsticks in transistor radios and peaked the trimmer caps at the top end and moved the coil winding on the ferrite rod at the low end to get best performance across the band. I'm not a novice. So, why don't you f*ck off? . .