Xtal Set Society, Inc
Web-Articles, Downloads, and Newsletter Article Index
Updated 05-25-10


The Xtal Set Society Newsletter has been published bi-monthly since July of 1991. Volumes 1991-2005 are available for sale via the bookstore web page on this site. Individual issues since then may also be purchased. Crystal radio beginner and general articles listed below may be viewed on this site and some are downloadable. Several ultrasound articles are also enclosed. An index of over 300 articles that have appears in the newsletter rounds out this reference page.

Beginner Crystal Set Web Articles:

  • How to Read Schematics
  • The AM Broadcast Band
  • A Big Ole Hunk of Galena Crystal
  • Crystal Set FAQs
  • How Crystal Sets Work

    • General Crystal Set Web Articles:

  • Variable Cap Lineup & Mounting
  • Equivalent Series and Parallel Circuits
  • XS-800 Antenna Measurement Bridge
  • Q of a Coil With Some Unused Turns


    • Ultrasound General Articles

  • The Ultrasound Spectrum A brief description of frequencies and pressure levels used by insects, animals, fish and for instrumentation. 12/04/08. To download this 3 page Article U1 as a pdf file: Click here.
  • 40 kHz Piezo Transducers An Introduction to PZT parameters. 12/04/08. To download this 2 page article as a pdf file: Click here.
  • The Ultra-QP: A QSO Party Rig (12-13-09) A description of the Ultra-QP Frequency-Division Receiver and Push-Pull Ultrasound Transceiver. This unit is designed to facilitate CW group practice using ultrasound techniques. The unit can also be used in a school lab for exploring many aspects of pressure waves.


    • General Down-loadable Articles or Information:

    (Hint. Downloads go much faster if you right click your mouse and save the file to your desktop or other file folder, rather than simply double-clicking to read the file directly).

  • Ultasound Pressure from a Weak Spark (05-25-10) pdf file.
  • Tikker Revisited (12-04-09) pdf file.
  • Resistance of Hardboard (11-15-09) pdf file.
  • X-Stopper Revisited Simulation (10-16-09) pdf file.
  • Mag-Coupling Selectivity-Sensitivity pdf file.
  • A Great Teacher: The Crystal Set pdf file, courtesy QEX (ARRL).
  • Derivation of Step Attenuator R Formulas pdf file.
  • The Trap Coil Q Measurement Method Revisited (for high Q coils in particular) pdf file.
  • About Q pdf file, Discusssion on Q Formulas/Measurement.
  • The AM RF Signal pdf file, Discusssion on makeup of an AM RF Signal.
  • Anatomy of Crystal Set Modeling: Equivalent Circuit Substitutions pdf file, with spice app.
  • XS-OB1 Kit Manual (updated 05-01-08) pdf file.
  • Different OAT BOX COILS pdf file.
  • XS-801 Kit Drawings pdf file.
  • Mechanical Dimensions for Mounting Variable Capacitors pdf file.
    •

    Crystal Set Society Newsletter Article Index:

    (over 300 articles)

    The Xtal Set Society Newsletter has been published bi-monthly since July of 1991. The following is a listing of articles by Catalog #, Month, Year, and Title. 1991-2005 volumes are for sale by catalog #. Newsletters since 2005 have not yet been bound but may be purchased separately.To order individual newsletters, only since 2005, list those that you want in the "comments section of your order cart; and, enter the number of individual newsletters ordered on the SINGLE NEWSLETTER entry. Click here for the Order Page.

    Click here for the newsletter-index. You can browse through the list; or, you can use the "Find" command in the Edit pop-up window of your browser. For example, if you wish to find all articles that contain the word (or partial word) "detect" in their title, enter detect in the Find window and press "Next" for each entry. Entering "detect" would find words including "detector," detecting, detection, etc.

    drop down find window