Crystal Radio--Air Variable Capacitors (4K)
14:50
HAM RADIO: Building a Variable Capacitor, DIY Capacitor, Magnetic Loop
9:42
Crystal Radio--No More Variable Capacitor Designs? (4K)
10:51
Crystal Radio Troubleshooting and Tips
16:31
Electronics on the Floor: An introduction to variable capacitors
8:01
Make a Crystal Radio Receiver - Part 2 - Making and Building the Scout's Crystal Set
28:58
Crystal Set Part 3 Loose Coupler
9:22
Variable capacitor for crystal radio experiments
19:03