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Ramsey Electronics CS-1 Crystal Radio Set Kit Unbuilt, with Manual

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MPN:
CS-1
Condition:
New
Shipping:
$9.00 (Fixed Shipping Cost)
  • Ramsey Electronics CS-1 unbuilt Crystal Radio Kit with manual. Classic passive AM broadcast receiver — no batteries needed. Perfect beginner, educational, science fair or nostalgia project. Simple assembly, receives local stations with wire antenna. Vintage hobby radio kit, NOS. Great for kids, schools & collectors.
  • Ramsey Electronics CS-1 unbuilt Crystal Radio Kit with manual. Classic passive AM broadcast receiver — no batteries needed. Perfect beginner, educational, science fair or nostalgia project. Simple assembly, receives local stations with wire antenna. Vintage hobby radio kit, NOS. Great for kids, schools & collectors.
  • Ramsey Electronics CS-1 unbuilt Crystal Radio Kit with manual. Classic passive AM broadcast receiver — no batteries needed. Perfect beginner, educational, science fair or nostalgia project. Simple assembly, receives local stations with wire antenna. Vintage hobby radio kit, NOS. Great for kids, schools & collectors.
$24.99
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Description

Ramsey Electronics CS-1 Crystal Radio Set Kit Unbuilt, with Manual

Step back in time with this genuine Ramsey Electronics CS-1 Crystal Radio Set Kit — brand new/unbuilt with original manual! Build your own historic crystal radio that runs on pure radio waves — no batteries or power required. This classic AM broadcast band receiver is an excellent educational project for all ages, ideal for science fairs, homeschooling, Scout troops, or vintage radio enthusiasts. Easy-to-follow instructions guide you through winding the coil and assembling the tuning circuit and diode detector. Pair it with a long wire antenna and ground for best reception of strong local stations. Compact and fun — a true piece of radio history you can build yourself.
 
 
Key Specifications and Features
  • Type: Classic passive crystal radio (crystal set) — no batteries, no external power needed. Receives AM broadcast band signals using radio wave energy only.
  • Tuning: Variable tuning capacitor + coil for selecting AM stations (typically medium wave, ~530–1700 kHz range, depending on antenna/coil).
  • Detector: Germanium diode (or equivalent crystal detector).
  • Output: High-impedance headphones/earphones (crystal or magnetic; low-impedance modern ones may need a matching transformer or amplifier for volume).
  • Construction: Simple kit with pre-drilled or easy-to-assemble parts, coil winding, etc. Compact wooden or plastic base/enclosure style (approx. 6¼" W x 3½" D x 3" H in some descriptions). Includes all necessary components and step-by-step manual.
     
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  • Performance: Receives strong local AM broadcast stations with a good long-wire antenna (50–100+ ft ideal) and proper ground. Sensitivity and selectivity are basic (typical for crystal sets). Educational — demonstrates resonance, RF detection, and early radio principles. Volume depends on signal strength and antenna efficiency.
This is a beginner/hobby/educational kit from Ramsey Electronics, popular for science fairs, kids, and nostalgia builders. It re-creates the "golden age" of radio with modern, reliable parts.
 
 
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