You need to download a package of software written by VE3ERP. I think it
is now on the CQ website, called "Hamcalc". While I don't have the
formula handy, the program is easier and has dozens of good modules in it.
BTW--I'd not pay a lot of attention to coil calculations. I'd put a cap in
parallel with the coil and find the resonant freq and calculate from
there. ARRL's "Lightning Calculator" handy for that, but if you don't
have a "Dip" meter to read the resonance that won't work for you. That
method tends to take into account a lot more factors.
207 Gibbons Place
Marietta Ohio 45750
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