Calculator Tricks
You don't need a fancy scientific calculator for most ham related math.
HOW TO DO 1/x CALCULATIONS ON YOUR CHEAP CALCULATOR
The original instruction sheet may have mentioned this, but how many of you can even find the instructions that may have came with your $4.00 calculator?
Most of today's cheap calculator chipsets include the capability to do 1/x calculations, but they do not include any "1/x" key to make it easy for you. Since we need to do this often in calculating capacitance based equations, here is a tip that should work with your cheap calculator.
Example: F = 1 / (L * C)
Perform the calculations for the denominator (L * C) part of
the equation. Then with that answer displayed, hit the division
key, followed by the equals key. You should now see the
result of dividing 1 by the denominator ( L * C ) part of the
equation.