[Amps] PI Calculator

[Will Matney]

I was trying out the PI calculator (Pi Network 1.0) written by Jim 
Hawkins WA2WHV and can't figure something out. When using the 
calculator, any plate impedance above about 1350 ohms will not keep a Q 
of 12 in the Q input field after the calculate button is clicked. Of 
course this throws off the end result wanted. This does not happen using 
the excel spreadsheet available that does the same. The spreadsheet 
method and the calculator is both dead on up to 1350 ohms. However, when 
trying to input 1400 ohms into the Hawkins calculator, the result 
wanders off from the spreadsheet because of the Q. I really liked this 
app because it would calculate the size of the inductor in turns with 
the diameter and spacing. Has anyone else tried this app and got the 
same results? Last, are there any other reliable apps that will do both 
the coil dimensions with the calculations made like Pi Network 1.0?

Will Matney