Crystal Radio Kit
Save for Later
Want to know when you'll get it? Go

What is “Estimated Delivery Date?”

This is an approximate delivery date and is not a guarantee. Delivery estimates are available only for select items to be delivered in the contiguous United States, excluding APO/FPO addresses and PO boxes. Your final shipping cost will be available at checkout.

OverstockTM Store Credit Card

6 or 12 Month Special
Financing Available
No Payments & No Interest on orders over
$150 if you pay in full within 6 months.
Learn More ›
No Payments & No Interest on orders over
$150 if you pay in full within 6 months.
Learn More ›

Crystal Radio Kit

Overall Rating Rating 3.9  |  7 reviews  |  Write a review
Today $8.52
Save $11.51 (57%)
Item #: 13021890
    Give any child in your life a gift that will teach them about science in a hands-on way with this fun crystal radio kit. The kit includes all the materials and instructions that they need to build a device that picks up the nearest radio stations....more
Kid Zone supporting PBS KIDS®

People Who Viewed This Viewed

Sponsored Links What's This?
    Kids can build a working crystal radio that will pick up radio stations with this activities kit. This crystal radio kit allows children to experiment with radio waves while learning chemistry basics.

      Kit contains
    • One diode
    • One base
    • Four rubber bands
    • One tuning rod
    • Two connecting wires
    • One coil wire
    • One sand paper
    • Three nuts
    • One earphone
    • Three bolts
    • Four washers
    • One coil tube
    • One tuning ball and one instruction manual
    • No batteries required
    • Meets or exceeds ASTM F 963
    • Dimensions: 9.1 inches high x 7 inches wide x 2.35 deep
    • Age recommendation: 8 years and up
    • Model: 2012
Model No:
Brand: Poof-Slinky


  • Theme
Was this product information helpful?
Thank you for your feedback.
Thank you. Your feedback will help us create the best experience for our customers.

Showing 5 most recent reviews on this product.

  • 5 Stars 3
  • 4 Stars 2
  • 3 Stars 1
  • 2 Stars 0
  • 1 Stars 1
  • Very satisfied.

    Fast service. Great product. Thank you

  • Doesn't work~poorly made

    This kit just not worth it at any price. It is flimsy and it is very difficut to get the coil to contact the tuner. Also, it requires an antenna wire that is a lot longer than what is supplied. They want you to hold the short wire and be the antenna. Then you can't work the radio. Also, they want you to ground the kit to a water faucet by holding the end of a wire to the faucet. So, one hand to hold the ground, one hand to tune, one hand to be the antenna and one hand to hold the kit together to get the coil in contact with the tuner. So, it will get quite crowded with all of these people around this tiny kit, Junk~~~

  • Half science project, half magic trick

    Have you ever made your own radio? A radio that needs NO ELECTRICITY; there's no need to plug it into an electric socket, no need to buy batteries for it, no need to turn a generator crank, no need for a solar panel, even. THIS IS THAT RADIO. It's as close to magic as science gets. Get one of these, put it together, and prepare to be amazed; if this doesn't amaze you, I don't know what will. You'll even learn something about radio waves, antennas, and wave propagation, if you aren't careful....

    spanghew from Ann Arbor, Michigan, Sep 13, 2014

    Flag As Inappropriate
  • Crystal radio kit

    Like the bell kit, just make sure you order well in advance. It was suppose to be delivered on the 19th it sat in a KY distribution center for over five days.

  • Too Complicated for Most Kids

    Difficult and confusing for most kids to put together for the recommended age group, but overall, a decently made product

    • How accurate was the sizing? Okay
    • Please tell us about the quality of the product. Good
    • Was the product free of any manufacturer defects? Yes
View All Most Recent Reviews

Product Q&A

Ask a Question

Be the first to ask a question about this product.

3-5 Business Days *

Standard Return Policy:

Items must be returned in new or unused condition and contain all original materials included with the shipment. More details

FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

Shipping Information:

Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
Standard shipping details
Expedited shipping details

* For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.

Buy Now with Bitcoin Learn More