I am working with the book "Build Your Own Transistor Radios" by Ronald Quan in which he has a lot of AM projects. I am having a hard time figuring out what I need to buy from his specifications. For example, he has the item L1 Antenna Coil, 470 mH primary 23 mH secondary which I assume means I need to buy two axial inductors, a 470 and 23. But there are a lot of possible parameters: tolerance, max DC, max current, self-resident frequency, whether it is shielded, etc. How do I know what to get?
Also, sometimes he talks about a "wrapped" inductor. For example, antenna coil 470 mH with 1 turn wrapped. What does that mean? If you go to Mouser you do not find anything with this description. Another example is antenna coil, 600 mH to 680 mH, 10 to 20 turns for secondary winding.