Crystal Radio--Air Variable Capacitors (4K)
9:42
Crystal Radio--No More Variable Capacitor Designs? (4K)
16:31
Electronics on the Floor: An introduction to variable capacitors
28:58
Crystal Set Part 3 Loose Coupler
12:07
Marconi CR100 Renovation (13) Cleaning the tuning capacitor.
8:01
Make a Crystal Radio Receiver - Part 2 - Making and Building the Scout's Crystal Set
9:22
Variable capacitor for crystal radio experiments
35:49
Philips Factory Thirties
10:51