Still time to get those new antennas up before the first frost!
Crystal Sets? Yup, youve found an entire site about building Crystal Sets. The Society has been growing since 1991; still, some people are flabbergasted to find an entire society dedicated to Crystal Set radios or "Xtal Sets". One web surfer e-mailed, "I was so excited to find your site that I fell off my chair! "The Xtal Set Society publishes a newsletter, numerous books, and has parts and kits for purchase. A listing of newsletter articles from 1993 through 2007 can be found on the Technical Articles Page. Click on the earphones at left to browse and enjoy our site. You'll notice we've added parts, kits, and articles on ultrasound too, starting in 2009. --Patricia, The Crystal Queen Mum, Editor, Xtal Society News. Site last updated 03/29/2015.
The March Newsletter was mailed March 1. Results of the Cigar Box Crystal Radio Challenge are detailed in this issue. Winners are Bill Holly, Larry Jeffers, Chip Olheiser and Anthony Dunn. An article titled Using a Transistor to Boost Crystal Set Gain is also presented by Phil, WØXI.
The January 2015 Newsletter was mailed 12/30/14. To subscribe or download a sample, see the Membership & Newsletter page.
On recent trip to Oklahoma we discovered a bunch of old radio parts stored in the back of a now defunct radio shop of circa ~ 1950. See the lineup of items "sold as is" on our Specials page; just click the link in the left-hand column. Here's a picture of one of the items:
*** Check out ***our new recessed dial parts on the parts page. These accommodate a cap and reduction drive combination. Also, check out our new SPIDER WEB RADIO KIT and our MINI-MK484 Radio Kit on the Kits page. We continue to stock the MK-484 TRF Radio on a Chip in a TO-92 package. See the parts page.
Beginners: For Science Fair Tips, click on the link at left. To download a copy of the XS-OB1 OAT BOX Crystal Radio Kit manual CLICK HERE. The file is in PDF format.
If you are a radio amateur and wish to impove your code (CW), click on theCodeCircle page listed on the left. It's a link to a blog by WØXI on improving code that you can subscribe to free of charge.
Are you a radio amateur who likes to make contacts using Morse Code? Then check out our CW filter kits on the kits page.
Click on the ultrasound kits page to see our 12-inch diameter 8-inch focal length clear plastic parabolic dish and the upgraded RX3 Receiver, designed for finding power line RF interference and listening to bats and other bio-sources in the 35-45 kHz ultrasound band!
View our air variable capacitor and reduction drive mounting article by clicking here.
Check out our new Passive CW Filter Kit on the Kits page. CW anyone? No batteries required.
Check our our new ABS Panel and Chasis kit on the Radio Kit's page.
Click on the kits page for more detail on our Infinite Impedance Detector, which improves audio quality over that of a germanium diode detector.