Thông tin tổng quát

• The Xtal Set Society, Dedicated to once again building and experimenting with radio electronics.
• Building a simple crystal radio.Field, Simon Quellen, Scitoys.
• Stay Tuned. Crystal radio plans and projects.
• "SWDXER" ¨The SWDXER¨ - with general SWL information and radio antenna tips.
• Build the Mystery Crystal set A simple and surprisingly effective and sensitive design.
• A website that has instructions on many different kinds of crystal radios, including a design only incorporating an earphone and a diode
• A website that lots of information on early radio and crystal sets
• Hobbydyne Crystal Radios History and Technical Information on Crystal Radios
• Ben Tongue's Technical Talk Section 1 links to "Crystal Radio Set Systems: Design, Measurements and Improvement".
• "Semiconductor archeology or tribute to unknown precusors". earthlink.net/~lenyr.
• Nyle Steiner K7NS, Zinc Negative Resistance RF Amplifier for Crystal Sets and Regenerative Receivers Uses No Tubes or Transistors. 20 tháng 11 năm 2002.
• Crystal Set DX? Roger Lapthorn G3XBM
• Building a crystal radio set A guide to building a simple crystal radio receiver.
• Website which has a large selection of homebuilt crystal and tube radios built by Dave Schmarder.
• The Bose Institute
• Varun Aggarwal of MIT's page on Bose

Bằng sáng chế

• Bằng sáng chế Hoa Kỳ số 766.840 "Detector for Electrical Disturbances", 1904, Acharya Jagadish Chandra Bose
• Bằng sáng chế Hoa Kỳ số 836.531 "Means for receiving intelligence communicated by electric waves", 1906. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 876.996 "Intelligence intercommunication by magnetic wave components", 1908. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 956.165, "Space communication", 1910. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 1.206.911, "System of radio communication", 1916. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 1.224.499, "Radio telegraphy and telephony receiver", 1917. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 1.245.266, "Radio telegraphy and telephony receiver", 1917. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 1.249.482, "Radio telegraphy and telephony receiver", 1917. G. W. Pickard.
• Bằng sáng chế Hoa Kỳ số 1.485.524, "Crystal detector for radio communication", 1924. Hugo H. Pickron. (ed., uses "crystal radio" term in the patent.)
• Bằng sáng chế Hoa Kỳ số 1.575.067,"Functioning parts of mineral type detectors", 1926. L. B. Lambert.
• Bằng sáng chế Hoa Kỳ số 1.648.521, "Radio receiving set", 1927. A. Wikstrom.
• Bằng sáng chế Hoa Kỳ số 1.748.435, "Crystal radio apparatus", 1930. H. Adams.
• Bằng sáng chế Hoa Kỳ số 1.825.070, "Radio receiving set", 1931. W. J. Kayser.
• Bằng sáng chế Hoa Kỳ số 2.805.332, "Subminiature portable crystal radio", 1957. Keith L. Bell.