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. Just enter your desired frequency and it will take care of the rest. Click the links below to use it for free!

Free Crystal Radio Initiative Calculator For Desktop (best viewed on larger screen sizes)

Free Crystal Radio Initiative Calculator For Tablets (best viewed on mobile and smaller screen sizes)

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

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
Click here to learn more

Don’t know what the Crystal Radio Initiative is? Click here to find out more, or visit Eric Dollard’s Crystal Radio Initiative home page by clicking here.

Happy experimenting!

  • Advanced Crystal Radio Initiative Calculator - Excel
  • Advanced Crystal Radio Initiative Calculator - Excel Diagram
  • Advanced Crystal Radio Initiative Calculator - Coil Analysis
  • Advanced Crystal Radio Initiative Calculator - Quattro Pro
  • Advanced Crystal Radio Initiative Calculator - OpenOffice Calc