On Sep 21, 10:25 pm, Clayton wrote:
Hi,
I have a coil that is wound on a 1.125 inch diameter form and 3 inches
long space wound with 25 turns of 11 gauge aluminum wire...
I am trying to duplicate this coil only instead of using 11 gauge wire
I am using 12 gauge aluminum wire.
I was wondering if somebody could help me out and make sure my math is
right since I am unsure of how to go about making sure I match the
inductance.

I had this figured out once but mistakenly had the wrong wire
gauges...

Any help is greatly appreciated
Thank You

Back not so long ago when you posted a similar question on the antenna
newsgroup, Owen Duffy so kindly posted a url for an inductance
calculator, which I repeat here for your benefit:
http://hamwaves.com/antennas/inductance.html. It will do all the math
for you. Well, almost all. You still need to put your dimensions in
terms of millimeters, and make sure you enter the diameter of the coil
as the form diameter plus the wire diameter, so that it's the mean
coil diameter you enter.

Cheers,
Tom