[TowerTalk] COIL 3.96

[Brian Beezley]

The 96th revision of my Windows coil calculator has improved accuracy 
for self-resonant frequency and proximity effect. Results are much more 
accurate for short coils. N6LF is using the program to optimize 
high-efficiency loops for 2200-meter receiving arrays.

COIL calculates inductance and Q for solenoids made of solid or Litz 
wire. It models a number of copper and aluminum alloys and form 
dielectrics. The program handles dielectric ribs (Air Dux) or ridges 
(steatite), axial or radial leads, and U.S. or metric units. COIL can 
automatically maximize coil Q while keeping inductance constant. It can 
provide results as an RLC model for wideband circuit or antenna 
analysis. To validate accuracy, the documentation compares calculated 
values with hundreds of inductance and Q measurements made with an HP 
4342A Q meter on dozens of coils.

http://ham-radio.com/k6sti/coil.zip

Brian