[Ron Ramirez]

250 turns of #38 AWG refers to the little bobbin up inside the antenna coil, part (2) on the schematic. It's the winding which connects between the set's antenna terminal and chassis. Often these windings were badly burned due to a lightning strike back in ye olden days when these radios were being used on a daily basis by their original owners.

Now, where did you get that chart which shows 100 turns? I can't seem to find it. Please post a link.