It's spring! Time to get outside and hang some antennas!
Have you ever tried a Beverage Antenna?
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 09/03/2015.
The September 2015 Newsletter was mailed 9/1. Randall Shreve presents his tribute to Bob Ryan, a long time member. Chip Ohleiser describes his MK-484 radio with a full schematic and parts list. Phil presents a brief discussion about the impedanc of crystal sets. Ron Sindric sent us some construction & assembly ideas.
The July 2015 newsletter was mailed 7/1/15. Phil, W0XI, has written an article about his Two-Way Beverage Antenna. Generally, Beverage antennas - due to their design - present less galactic and storm-based noise for reception. Dan, W7OIL, has an article titled "Slip Slidin' Away. It features a slider coil radio with plans. Larry Jeffers sent us his article entitled "Amplified Crystal Cathedral." It includes some neat woven coils and a full schematic. Lewis Ball describes his MK-484 in a Cigar Box radio. Ken Ladd included some notes on his Scrap Pile Radio. Enjoy!
Results of the Cigar Box Crystal Radio Challenge were detailed in the March issue. Winners were Bill Holly, Larry Jeffers, Chip Olheiser and Anthony Dunn. An article titled Using a Transistor to Boost Crystal Set Gain was presented by Phil, WØXI.
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:
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.
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.