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A Crystal-Set Circuit Tutorial: START HERE!
Crystal Sets 202 "Understanding and Building Crystal Radio Sets" A guided tour of my site. (A thirty-year adventure with crystal sets.) YouTube Video of above. CRYSTAL SET DESIGN 102 An analysis of basic circuit topologies.  |
 Coils can make or break a crystal set. Here are some thoughts on the design of aiir-core coils. |
One of the weak links in many sets is the earphones. Headsets New! Headset Testing |
 Sound-Powered Telephone Spotter's Guide |
The Search for Steel Galena  |
You can mount your own mineral crystals for use as detectors: Mounting Crystals |
A look at some vintage detectors: TWO WIRELESS DETECTORS  The Marconi Cerusite Caper |
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| Crystal-Set
Projects: New! |
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| Junk AA-5 Radio to Crystal Set Crystal-Set Performance Comparison |
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Traveling with a Crystal Set |
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Build a Pretty Good Crystal Set The PGXS Mark II |
| People building their own PGXS's at the Radio Technology Museum |
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  (Built by a satisfied customer.)
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Make Your PGXS Double-tuned
Build a second coil-capacator assembly on a separate base. Connect it to your antenna and ground, and place it beside your PGXS. Tune the original set to minimum capacity, and bring the two coils together, end to end, as close as possible. Search for stations using the coil taps and capacitor on the "primary," The front end. Then pull the coils apart, and retune the secondary. You'll be amazed. Crystalsets don't get a whole lot better than this. |
Speakers
for Crystal Sets |
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A minature crystal
set for urban areas:
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Seminal article on double-tuned crystal sets. |
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SkyWaves High-Performance Crystal Set |
| A simple but effective SINGLE-TUNED SET that rejects short-wave signals. |
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Now you'll need a
detector stand. Here's one you can build:
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| An experimental SHORT-WAVE CRYSTAL SET |
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Westinghouse
Aeriola Jr. Clone |
| The Jersey City Project |
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