Crystal Radio--Hi Q Hoop Coil--Copper vs Litz (4K)
20:24
Crystal Radio, Ferrite Coil Model #1 (4K)
11:55
My Crystal Radio Does NOT Work (FIXES for common problems)
22:47
Your First Varactor Tuned Crystal Radio
25:06
Crystal Radios: No Batteries? No Problem!
34:48
Make a Crystal Radio Receiver - Part 3 - The Scout's Crystal Set Explained - How does it Work?
22:28
Crystal Radio Coil Size/Type Experiments 1-3 Remix
31:11
Mike Peebles "PO-1956" Amplified Crystal Set
24:32