Electrical Circuits Explained
It does a great job of explaining electrical circuits and has a ton of 
other electronics/engineering projects to play with!

Scott's Crystal Radios


Peeble's Originals     Mike Peeble's website   Excellent website. Much info and has parts for sale.


The Radio Boaard (FORUMS)   Tons of information. Dave also has a nice website and sells parts! I recommend him!


SkyWaves  Al Klase - N3FRQ    
Al Klase website. Including "crystal set design 102". A must see site. Also


Welcome to Ben Tongue's Technical Talk     Ben Tonque's website. "Measurement methods and actual measurements are described relating to selectivity, sensitivity, coil Q, diode parameters, audio transformer characteristics and earphone parameters. The design of a crystal set that embodies these principles is shown, along with performance measurements. Some original technical concepts and applications are presented." This is the granddaddy website for the technical minded person.


Birmingham, Alabama Crystal Radio Group (BAMA)   A premire website. Home of the DX contests. Lots of excellent information! Must see this site.


Gollum´s Crystal Receiver World.     Gollum's website. "Crystal receivers, construction projects and plans, old-time crystal sets, hints, crystal receiver store." Lots of interesting  information here.  Has parts store. Located in Germany.


Modern Radio Laboratories®     "Exclusive Source, printing and publishing of all MRL® Handbooks and Literature by Paul Nelson and Elmer G. Osterhoudt." A "Must Have" Collection


The Old Radio Builder 


British Vintage Wireless Society    
Published by the British Vintage Wireless Society (BVWS)


Techlib.com crystal radio circuits     Charles Wenzel's website. Facinating projects with some simple crystal radios. Very interisting.

Experimental Short-wave "Mystery"    Ken Harthun's website.  Short wave "Mystery" crystal set.


Jim's Crystal Radio Page     Jim Frederick's website.


Rook Coils for Crystal Radios     Learn how to build a "Rook" Coil. Several radio sets also.


Improvement of the “Mystery” Crystal Radio     Ken Harthun's website. The improvement of the "Mystery Set".


Simply Symmetry Crystal Radio for Casual Listening   More Tom Polk website


CRYSTAL RADIO    Duggee's website

SHORTWAVE CRYSTAL RADIO SET   Patrick Smith's website (GW0VMR) Short wave crystal sets.

Fourth Graders' Do-It-Yourself Crystal Radios     Tom Polk article on a class project.


XTALSET    Nice little set.


Boyd's Tin Can Engines      Try building a stirling hot air engine