Dual layer primaries

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Original poster: "Jason Johnson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <hvjjohnson13-at-hotmail-dot-com>

Hello,
 
Does anyone have any idea as to how to calculate inductance for a two level
primary? I'm talking about a primary coil that is wound with two layers both
going the same direction and seperated by an inch or so, inner turns connected
together, and tapped in two places, one on the bottom half, one on the top
half. I know that I can't just calc. for one primary and then double it,
because the halves are going to have some mutual inductance, resulting in a
higher overall inductance than just doubling one of half the size, right? Does
anyone get what I'm talking abut here?
 
<<Jason Johnson>>
The Geek Group
G-3 #1129
<http://www.thegeekgroup-dot-org/>http://www.thegeekgroup-dot-org/