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Single Layer Air Coil Inductance Calculator
d = Coil diameter (in), n = Number of turns, l = Coil length (in)

Vary Low - High
Coil Diameter (d)
Number of turns (n)
Coil Length (l)

Estimated Wire Turns:

(per inch)
(per cm) 

1) For broadcast band you want inductance between 250uH and 300uH (280uH)
2) This calculator will get you close and is not intended as a final formula

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Original Calculator written by Ralph Reiter
Use granted by Ralph Reiter on a "as-is" basis
Altered with permission by Darryl Boyd
Copyrighted  March, 2001 by Darryl Boyd