Crystal Radio
stay tuned crystal radio and tube radio website
crystal set

Miscellaneous Plans and Circuits
Over 200 Plans!!
If you have any plans to share, please email me.


New !
These are a series of sound amplifiers
for radio called
"Sound Intensifiers"
"Microphonic Relays"
"Telephone Relays"
Very interesting articles

Bucher Articles
Page 1    Page 2    Page 3

Hutchenson Article
Page 1

Brown Article
Page 1   Page 2   Page 3  Page 4    Page 5

Page 6   Page 7   Page 8  Page 9    Page 10

Page 11   Page 12   Page 13  Page 14

Zenneck Article
Page 1   Page 2    Page 3

Donated by Brian Butler
added 8 Feb 04

New !
Amplifier Fits On Headphone
JPG Files
Page 1

New !
How To Design
Your Own RF Coils
JPG Files
Page 1    Page 2

New !
Two-Way Five-Meter Phone
Built in Tool Box
JPG Files
Page 1    Page 2     Page 3    Page 4

Informational article only
May or may not be legal to build and use now

New !
A Desk Cabinet For
Radio Apparatus
JPG Files
Page 1   Page 2

Build a Stirling Hot Air Engine

From Tin Cans!!!

Click Here


I'm looking for old plans to post!!

If you have any, please email me!!!

Crystal Radio
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1999-2010  Darryl Boyd,  All rights reserved
Copyright Notice:
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If you are thinking of downloading my copyrighted items and selling them on ebay (or anywhere) keep this in mind,
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We have made every effort to ensure that the information provided on this website is accurate and up to date.
All information on this website is informational only and no
guarantees to the accuracy of any of the projects
or circuits on this site or calculators. If you find something you feel is inaccurate, please inform us by e-mail. Be sure to provide a thorough argument to support your case. Confirmed changes will be made as quickly as possible.

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