Free Crystal Radio Initiative Calculator


The Free Crystal Radio Initiative Calculator calculates all the basic factors required to build a Tesla style resonant transformer using Eric Dollard’s equations. Use it for free below!

Free Crystal Radio Initiative Calculator
Primary Coil
Secondary Coil
mm
Length/Diameter Ratio
0.2
Circumference
mm
Conductor Spacing
mm
Pitch
mm
Pitch Increment
mm
Crystal Radio Initiative By Eric Dollard
Free Crystal Radio Initiative Calculator Diagram

Read How To Use The Crystal Radio initiative Calculator for a brief introduction to the features.

Also Available: Advanced Crystal Radio Initiative Calculator

There’s also an Advanced Crystal Radio Initiative Calculator available as a downloadable spreadsheet. It has all the features of the Free Crystal Radio Initiative Calculator and more, including:

  • Conductor copper weight calculation
  • Hollow primary coil conductor copper weight
  • Active copper weight
  • Advanced electrical analysis of the secondary coil based on your measured frequencies
  • MS Excel, Corel Quattro Pro and OpenOffice Calc spreadsheets included in single download

Don’t know what the Crystal Radio Initiative is? Click here to find out more, or visit the official Crystal Radio Initiative forum discussion by clicking here.

Happy experimenting!

Advanced Crystal Radio Initiative Calculator - Excel
Advanced Crystal Radio Initiative Calculator – Excel
Advanced Crystal Radio Initiative Calculator - Excel Diagram
Values in diagram are updated in real-time
Advanced Crystal Radio Initiative Calculator - Coil Analysis
Advanced Crystal Radio Initiative Calculator – Coil Analysis
Advanced Crystal Radio Initiative Calculator - Quattro Pro
Advanced Crystal Radio Initiative Calculator – Quattro Pro
Advanced Crystal Radio Initiative Calculator - OpenOffice Calc
Advanced Crystal Radio Initiative Calculator – OpenOffice Calc