Understanding Parallel to Series conversion

Yes that can be done, but my inductor will be 660/46 litz wire. I'm sure it's possible to make a tap, but with the cost of litz I don't want to. Mikek

Thank you Tony, for the good description you made. I wrote a short basic program to calculate the parallel conversion. I can run the numbers for different frequencies, and different Cs and Rs for the antenna. Thanks for the tip about the parallel inductor. Thanks again, Mikek

So what is wrong with winding a "second" layer with only a few truns (say 1/20 of larger coil) and connecting it series aiding, use whole "tapped" (now) coil for the LC resonance and the use that (new) tap? Besides, if it is not would, the amount of the wire would be no different wether you put a tap in or not.

Nothing wrong with that at all, there are many ways to build a crystal radio. Here's just 77 of them. Have fun, Mikek