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!

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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.

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

Learn more

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!

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